Uncertainty in modelling the hydrologic responses of a large watershed: a case study of the Athabasca River basin, Canada
Abstract Large‐scale watershed modelling presents a unique challenge in terms of physiographic and climatological heterogeneity, and spatially varied hydrologic responses. In particular, the spatial variability in hydrologic processes may introduce a high degree of uncertainty in the modelling of a...
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crwiley:10.1002/hyp.10230 2024-09-15T17:55:11+00:00 Uncertainty in modelling the hydrologic responses of a large watershed: a case study of the Athabasca River basin, Canada Eum, Hyung‐Il Yonas, Dibike Prowse, Terry Environment Canada 2014 http://dx.doi.org/10.1002/hyp.10230 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.10230 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.10230 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Hydrological Processes volume 28, issue 14, page 4272-4293 ISSN 0885-6087 1099-1085 journal-article 2014 crwiley https://doi.org/10.1002/hyp.10230 2024-07-11T04:37:52Z Abstract Large‐scale watershed modelling presents a unique challenge in terms of physiographic and climatological heterogeneity, and spatially varied hydrologic responses. In particular, the spatial variability in hydrologic processes may introduce a high degree of uncertainty in the modelling of a large watershed. This study assessed the uncertainties in annual/seasonal streamflow and annual peak flow simulations with respect to selection of climate data and model parameter sets for the variable infiltration capacity (VIC) model of the Athabasca River basin (ARB) in Alberta, Canada. Two high‐resolution gridded climate data sets over the 1979 to 2010 period, and six different model parameter sets calibrated corresponding to different time periods and various hydrologic patterns, were employed to quantify the uncertainty in VIC simulations. Moreover, the possibility of an ensemble approach to predict hydrologic responses in the ARB has been investigated. The results indicated that streamflow simulations near the headwater and along the Athabasca River mainstream have high uncertainty corresponding to selection of climate data mainly because of greater difference of precipitation between the two climate data sets, whereas sub‐basin stations at low elevations were more sensitive to the selection of parameter set for interflow‐dominated runoff cycle. All stations showed higher uncertainty corresponding to the selection of parameter set for annual peak flows. In addition, this study confirmed that the ensemble means can provide more accurate and consistent hydrologic information for the low‐elevation area where higher internal variability exists. © 2013 Her Majesty the Queen in Right of Canada. Hydrological Processes © 2013 John Wiley & Sons Ltd. Article in Journal/Newspaper Athabasca River Wiley Online Library Hydrological Processes 28 14 4272 4293 |
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English |
description |
Abstract Large‐scale watershed modelling presents a unique challenge in terms of physiographic and climatological heterogeneity, and spatially varied hydrologic responses. In particular, the spatial variability in hydrologic processes may introduce a high degree of uncertainty in the modelling of a large watershed. This study assessed the uncertainties in annual/seasonal streamflow and annual peak flow simulations with respect to selection of climate data and model parameter sets for the variable infiltration capacity (VIC) model of the Athabasca River basin (ARB) in Alberta, Canada. Two high‐resolution gridded climate data sets over the 1979 to 2010 period, and six different model parameter sets calibrated corresponding to different time periods and various hydrologic patterns, were employed to quantify the uncertainty in VIC simulations. Moreover, the possibility of an ensemble approach to predict hydrologic responses in the ARB has been investigated. The results indicated that streamflow simulations near the headwater and along the Athabasca River mainstream have high uncertainty corresponding to selection of climate data mainly because of greater difference of precipitation between the two climate data sets, whereas sub‐basin stations at low elevations were more sensitive to the selection of parameter set for interflow‐dominated runoff cycle. All stations showed higher uncertainty corresponding to the selection of parameter set for annual peak flows. In addition, this study confirmed that the ensemble means can provide more accurate and consistent hydrologic information for the low‐elevation area where higher internal variability exists. © 2013 Her Majesty the Queen in Right of Canada. Hydrological Processes © 2013 John Wiley & Sons Ltd. |
author2 |
Environment Canada |
format |
Article in Journal/Newspaper |
author |
Eum, Hyung‐Il Yonas, Dibike Prowse, Terry |
spellingShingle |
Eum, Hyung‐Il Yonas, Dibike Prowse, Terry Uncertainty in modelling the hydrologic responses of a large watershed: a case study of the Athabasca River basin, Canada |
author_facet |
Eum, Hyung‐Il Yonas, Dibike Prowse, Terry |
author_sort |
Eum, Hyung‐Il |
title |
Uncertainty in modelling the hydrologic responses of a large watershed: a case study of the Athabasca River basin, Canada |
title_short |
Uncertainty in modelling the hydrologic responses of a large watershed: a case study of the Athabasca River basin, Canada |
title_full |
Uncertainty in modelling the hydrologic responses of a large watershed: a case study of the Athabasca River basin, Canada |
title_fullStr |
Uncertainty in modelling the hydrologic responses of a large watershed: a case study of the Athabasca River basin, Canada |
title_full_unstemmed |
Uncertainty in modelling the hydrologic responses of a large watershed: a case study of the Athabasca River basin, Canada |
title_sort |
uncertainty in modelling the hydrologic responses of a large watershed: a case study of the athabasca river basin, canada |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1002/hyp.10230 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fhyp.10230 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.10230 |
genre |
Athabasca River |
genre_facet |
Athabasca River |
op_source |
Hydrological Processes volume 28, issue 14, page 4272-4293 ISSN 0885-6087 1099-1085 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/hyp.10230 |
container_title |
Hydrological Processes |
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28 |
container_issue |
14 |
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4272 |
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4293 |
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1810431502292353024 |