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Winsemius, H.C. (author), Savenije, H.H.G. (author), Bastiaanssen, W.G.M. (author)OA-fund In this study, land surface related parameter distributions of a conceptual semi-distributed hydrological model are constrained by employing time series of satellite-based evaporation estimates during the dry season as explanatory information. The approach has been applied to the ungauged Luangwa river basin (150 000 (km)2) in Zambia....journal article 2008
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Friesen, J.C. (author), Van Beek, C. (author), Selker, J. (author), Savenije, H.H.G. (author), Van de Giesen, N. (author)A method for measuring whole-tree interception of precipitation is presented which employs mechanical displacement sensors to measure trunk compression caused by the water captured by the tree. This direct and nondestructive method is demonstrated to be sensitive to less than 5 kg of interception field tests in Netherlands and Ghana.journal article 2008
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Klees, R. (author), Liu, X. (author), Wittwe, T. (author), Gunter, B.C. (author), Revtova, E.A. (author), Tenzer, R. (author), Ditmar, P. (author), Winsemius, H.C. (author), Savenije, H.H.G. (author)When using GRACE as a tool for hydrology, many different gravity field model products are now available to the end user. The traditional spherical harmonics solutions produced from GRACE are typically obtained through an optimization of the gravity field data at the global scale, and are generated by a number of processing centers around the...journal article 2008
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Savenije, H.H.G. (author), Toffolon, M. (author), Haas, J. (author), Veling, E.J.M. (author)Analytical solutions of the one-dimensional hydrodynamic equations for tidal wave propagation are now available and, in this paper, presented in explicit equations. For given topography, friction, and tidal amplitude at the downstream boundary, the velocity amplitude, the wave celerity, the tidal damping, and the phase lag can be computed. The...journal article 2008
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Schoups, G. (author), Van de Giesen, N.C. (author), Savenije, H.H.G. (author)A common concern in hydrologic modeling is overparameterization of complex models given limited and noisy data. This leads to problems of parameter nonuniqueness and equifinality, which may negatively affect prediction uncertainties. A systematic way of controlling model complexity is therefore needed. We compare three model complexity control...journal article 2008
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Van der Wegen, M. (author), Wang, Z.B. (author), Savenije, H.H.G. (author), Roelvink, J.A. (author)The morphodynamic system in alluvial, coastal plain estuaries is complex and characterized by various timescales and spatial scales. The current research aims to investigate the interaction between these different scales as well as the estuarine morphodynamic evolution. Use is made of a process-based, numerical model describing 2-D shallow water...journal article 2008
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Fenicia, F. (author), McDonnell, J.J. (author), Savenije, H.H.G. (author)A priori determined model structures are common in catchment rainfall-runoff modeling. While this has resulted in many ready-to-use modeling tools, there are several shortcomings of a one-size-fits-all model structure. The uniqueness of catchments with respect to their hydrological behavior and the need to adapt model complexity to data...journal article 2008
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Liu, J. (author), Savenije, H.H.G. (author)It is widely recognized that food consumption patterns significantly impact water requirements. The aim of this paper is to quantify how food consumption patterns influence water requirements in China. The findings show that per capita water requirement for food (CWRF) has increased from 255 m3 cap-1y?1 in 1961 to 860 m3 cap-1 y?1 in 2003,...journal article 2008
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Ngigi, S.N. (author), Savenije, H.H.G. (author), Gichuki, F.N. (author)The upper Ewaso Ng’iro basin, which starts from the central highlands of Kenya and stretches northwards transcending different climatic zones, has experienced decreasing river flows for the last two decades. The Naro Moru sub-basin is used to demonstrate the looming water crisis in this water scarce river basin. The objective of the study was to...journal article 2008
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Savenije, H.H.G. (author)Hydrological modelling is the same as developing and encoding a hydrological theory. A hydrological model is not a tool but a hypothesis. The whole discussion about the inadequacy of hydrological models we have witnessed of late, is related to the wrong concept of what a model is. Good models don't exist. Instead of looking for the "best" model,...journal article 2008
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Fenicia, F. (author), Savenije, H.H.G. (author), Matgen, P. (author), Pfister, L. (author)Lack of data is one of the main limitations for hydrological modeling. However, it is often used as a justification for over simplifying, poorly performing models. If we want to enhance our understanding of hydrological systems, it is important to fully exploit the information contained in the available data, and to learn from model deficiencies...journal article 2008
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Fenicia, F. (author), Savenije, H.H.G. (author), Matgen, P. (author), Pfister, L. (author)A conceptual hydrological model structure contains several parameters that have to be estimated through matching observed and modeled watershed behavior in a calibration process. The requirement that a model simulation matches different aspects of system response at the same time has led the calibration problem toward a multiobjective approach....journal article 2007
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- Klees, R. (author), Zapreeva, E.A. (author), Winsemius, H.C. (author), Savenije, H.H.G. (author) journal article 2007
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- Fenicia, F. (author), Solomatine, D.P. (author), Savenije, H.H.G. (author), Matgen, P. (author) journal article 2007
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- Gerrits, A.M.J. (author), Savenije, H.H.G. (author), Hoffmann, L. (author), Pfister, L. (author) journal article 2007
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- Kamp, R.G. (author), Savenije, H.H.G. (author) journal article 2007
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- Westhoff, M.C. (author), Savenije, H.H.G. (author), Luxemburg, W.M.J. (author), Stelling, G.S. (author), van de Giesen, N.C. (author), Selker, J.S. (author), Pfister, L. (author), Uhlenbrook, S. (author) journal article 2007
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De Groen, M.M. (author), Savenije, H.H.G. (author)This paper presents a simple analytical equation for monthly interception on the basis of the combination of a daily threshold model with the probability distribution of daily rainfall. In this paper, interception has a wider definition than merely canopy interception. It is the part of the rainfall that evaporates after it has been stored on...journal article 2006
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Winsemius, H.C. (author), Savenije, H.H.G. (author), Van de Giesen, N.C. (author), Van den Hurk, B.J.J.M. (author), Zapreeva, E.A. (author), Klees, R. (author)The temporal signature of terrestrial storage changes inferred from the Gravity Recovery and Climate Experiment (GRACE) has been assessed by comparison with outputs from a calibrated hydrological model (lumped elementary watershed (LEW)) of the upper Zambezi and surroundings and an inspection of the within?month ground track coverage of GRACE...journal article 2006
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Fenicia, F. (author), Savenije, H.H.G. (author), Matgen, P. (author), Pfister, L. (author)Although catchment behaviour during recession periods is better identifiable than in other periods, the representation of hydrograph recession is often weak in hydrological simulations. Among the various aspects that influence model performance during low flows, in this paper we concentrate on those more inherently related to the modelling, such...journal article 2006