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Definitions of clim...
Definitions of climatological and discharge days : do they matter in hydrological modelling?
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- Reynolds, J. Eduardo (författare)
- Uppsala universitet,Luft-, vatten- och landskapslära,Ctr Nat Hazards & Disaster Sci CNDS, Uppsala, Sweden
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- Halldin, Sven (författare)
- Uppsala universitet,Luft-, vatten- och landskapslära,Ctr Nat Hazards & Disaster Sci CNDS, Uppsala, Sweden
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- Seibert, Jan (författare)
- Uppsala universitet,Stockholms universitet,Institutionen för naturgeografi,Uppsala University, Sweden; University of Zurich, Switzerland,Luft-, vatten- och landskapslära,Stockholm Univ, Dept Phys Geog, Stockholm, Sweden;Univ Zurich, Dept Geog, Zurich, Switzerland
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- Xu, Chong-Yu (författare)
- Uppsala universitet,Luft-, vatten- och landskapslära,Univ Oslo, Dept Geosci, Oslo, Norway
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(creator_code:org_t)
- 2018-03-27
- 2018
- Engelska.
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Ingår i: Hydrological Sciences Journal. - : Informa UK Limited. - 0262-6667 .- 2150-3435. ; 63:5, s. 836-844
- Relaterad länk:
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The performance of hydrological models is affected by uncertainty related to observed climatological and discharge data. Although the latter has been widely investigated, the effects on hydrological models from different starting times of the day have received little interest. In this study, observational data from one tropical basin were used to investigate the effects on a typical bucket-type hydrological model, the HBV, when the definitions of the climatological and discharge days are changed. An optimization procedure based on a genetic algorithm was used to assess the effects on model performance. Nash-Sutcliffe efficiencies varied considerably between day definitions, with the largest dependence on the climatological-day definition. The variation was likely caused by how storm water was assigned to one or two daily rainfall values depending on the definition of the climatological day. Hydrological models are unlikely to predict high flows accurately if rainfall intensities are reduced because of the day definition.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related 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
- climatological day
- discharge day
- rainfall-runoff model
- daily resolution
- regionalization
- floods
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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