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Gao, Hongkai (author), Fenicia, Fabrizio (author), Savenije, Hubert (author)Traditional hydrological theories are based on the assumption that soil is key in determining water's fate in the hydrological cycle. According to these theories, soil hydraulic properties determine water movement in both saturated and unsaturated zones, described by matrix flow formulas such as the Darcy–Richards equations. They also determine...journal article 2023
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Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai-Tibet PlateauGao, Hongkai (author), Han, Chuntan (author), Chen, Rensheng (author), Feng, Zijing (author), Wang, Kang (author), Fenicia, Fabrizio (author), Savenije, Hubert (author)Increased attention directed at frozen soil hydrology has been prompted by climate change. In spite of an increasing number of field measurements and modeling studies, the impact of frozen soil on hydrological processes at the catchment scale is still unclear. However, frozen soil hydrology models have mostly been developed based on a bottom...journal article 2022
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Bouaziz, L.J.E. (author), Fenicia, Fabrizio (author), Thirel, Guillaume (author), de Boer-Euser, Tanja (author), Buitink, Joost (author), Brauer, Claudia C. (author), De Niel, Jan (author), Savenije, Hubert (author), Hrachowitz, M. (author)Streamflow is often the only variable used to evaluate hydrological models. In a previous international comparison study, eight research groups followed an identical protocol to calibrate 12 hydrological models using observed streamflow of catchments within the Meuse basin. In the current study, we quantify the differences in five states and...journal article 2021
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Gharari, Shervan (author), Gupta, Hoshin V. (author), Clark, Martyn P. (author), Hrachowitz, M. (author), Fenicia, Fabrizio (author), Matgen, Patrick (author), Savenije, Hubert (author)Process-based hydrological models seek to represent the dominant hydrological processes in a catchment. However, due to unavoidable incompleteness of knowledge, the construction of “fidelius” process-based models depends largely on expert judgment. We present a systematic approach that treats models as hierarchical assemblages of hypotheses ...journal article 2021
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de Boer-Euser, Tanja (author), Bouaziz, L.J.E. (author), De Niel, J. (author), Brauer, C. (author), Dewals, B. (author), Drogue, G. (author), Fenicia, F. (author), Grelier, B. (author), Nossent, J. (author), Pereira, F. (author), Savenije, Hubert (author), Thirel, G. (author), Willems, P (author)International collaboration between research institutes and universities is a promising way to reach consensus on hydrological model development. Although model comparison studies are very valuable for international cooperation, they do often not lead to very clear new insights regarding the relevance of the modelled processes. We hypothesise...journal article 2017
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Gao, H. (author), Hrachowitz, M. (author), Sriwongsitanon, Nutchanart (author), Fenicia, F. (author), Gharari, S. (author), Savenije, Hubert (author)Understanding which catchment characteristics dominate hydrologic response and how to take them into account remains a challenge in hydrological modeling, particularly in ungauged basins. This is even more so in nontemperate and nonhumid catchments, where—due to the combination of seasonality and the occurrence of dry spells—threshold processes...journal article 2016
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- Fenicia, F. (author), Kavetski, D (author), Savenije, Hubert (author), Pfister, L (author) journal article 2016
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- Gao, H. (author), Hrachowitz, M. (author), Fenicia, F.F. (author), Gharari, S. (author), Sriwongsitanon, N. (author), Savenije, H.H.G. (author) journal article 2015
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- Gao, H. (author), Hrachowitz, M. (author), Schymanski, S. (author), Fenicia, F.F. (author), Sriwongsitanon, N. (author), Savenije, H.H.G. (author) journal article 2015
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Gharari, S. (author), Shafiei, M. (author), Hrachowitz, M. (author), Kumar, R. (author), Fenicia, F. (author), Gupta, H.V. (author), Savenije, H.H.G. (author)Many environmental systems models, such as conceptual rainfall-runoff models, rely on model calibration for parameter identification. For this, an observed output time series (such as runoff) is needed, but frequently not available (e.g., when making predictions in ungauged basins). In this study, we provide an alternative approach for parameter...journal article 2014
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Gharari, S. (author), Hrachowitz, M. (author), Fenicia, F. (author), Gao, H. (author), Savenije, H.H.G. (author)Conceptual environmental system models, such as rainfall runoff models, generally rely on calibration for parameter identification. Increasing complexity of this type of models for better representation of hydrological process heterogeneity, typically makes parameter identification more difficult. Although various, potentially valuable,...journal article 2014
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Gao, H. (author), Hrachowitz, M. (author), Schymanski, S.J. (author), Fenicia, F.F. (author), Sriwongsitanon, N. (author), Savenije, H.H.G. (author)The root zone moisture storage capacity (SR) of terrestrial ecosystems is a buffer providing vegetation continuous access to water and a critical factor controlling land-atmospheric moisture exchange, hydrological response, and biogeochemical processes. However, it is impossible to observe directly at catchment scale. Here, using data from 300...journal article 2014
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Gao, H. (author), Hrachowitz, M. (author), Fenicia, F.F. (author), Gharari, S. (author), Savenije, H.H.G. (author)Although elevation data are globally available and used in many existing hydrological models, their information content is still underexploited. Topography is closely related to geology, soil, climate and land cover. As a result, it may reflect the dominant hydrological processes in a catchment. In this study, we evaluated this hypothesis...journal article 2014
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Gharari, S. (author), Shafiei, M. (author), Hrachowitz, M. (author), Fenicia, F. (author), Gupta, H.V. (author), Savenije, H.H.G. (author)Many environmental systems models, such as conceptual rainfall-runoff models, rely on model calibration for parameter identification. For this, an observed output time series (such as runoff) is needed, but frequently not available. Here, we explore another way to constrain the parameter values of semi-distributed conceptual models, based on two...journal article 2013
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- Gao, H. (author), Hrachowitz, M. (author), Fenicia, F.F. (author), Gharari, S. (author), Savenije, H.H.G. (author) journal article 2013
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Euser, T. (author), Winsemius, H.C. (author), Hrachowitz, M. (author), Fenicia, F. (author), Uhlenbrook, S. (author), Savenije, H.H.G. (author)The use of flexible hydrological model structures for hypothesis testing requires an objective and diagnostic method to identify whether a rainfall-runoff model structure is suitable for a certain catchment. To determine if a model structure is realistic, i.e. if it captures the relevant runoff processes, both performance and consistency are...journal article 2013
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Gharari, S. (author), Hrachowitz, M. (author), Fenicia, F. (author), Savenije, H.H.G. (author)Conceptual hydrological models rely on calibration for the identification of their parameters. As these models are typically designed to reflect real catchment processes, a key objective of an appropriate calibration strategy is the determination of parameter sets that reflect a “realistic” model behavior. Previous studies have shown that...journal article 2013
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- Euser, T. (author), Winsemius, H.C. (author), Hrachowitz, M. (author), Fenicia, F. (author), Uhlenbrook, S. (author), Savenije, H.H.G. (author) journal article 2012
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Gharari, S. (author), Hrachowitz, M. (author), Fenicia, F. (author), Savenije, H.H.G. (author)Conceptual hydrological models often rely on calibration for the identification of their parameters. As these models are typically designed to reflect real catchment processes, a key objective of an appropriate calibration strategy is the determination of parameter sets that reflect a “realistic” model behavior. Previous studies have shown that...journal article 2012
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Fenicia, F. (author), Kavetski, D. (author), Savenije, H.H.G. (author)This paper introduces a flexible framework for conceptual hydrological modeling, with two related objectives: (1) generalize and systematize the currently fragmented field of conceptual models and (2) provide a robust platform for understanding and modeling hydrological systems. In contrast to currently dominant “fixed” model applications, the...journal article 2011
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