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Cain, Molly R. (author), Ward, Adam S. (author), Hrachowitz, M. (author)Recent studies have demonstrated that compartmentalized pools of water preferentially supply either plant transpiration (poorly mobile water) or streamflow and groundwater (highly mobile water) in some catchments, a phenomenon referred to as ecohydrologic separation. The omission of processes accounting for ecohydrologic separation in standard...journal article 2019
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Prenner, D. (author), Hrachowitz, M. (author), Kaitna, R. (author)Torrential processes like fluvial flows (flash floods with or without intensive sediment transport) and debris flows can represent a threat to people and infrastructure in alpine domains. Up to now the hydro-meteorological trigger conditions and their connection with geomorphic watershed characteristics that favor the initiation of either...journal article 2019
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Zhou, C. (author), van Nooijen, R.R.P. (author), Kolechkina, A.G. (author), Hrachowitz, M. (author)Several commonly-used nonparametric change-point detection methods are analysed in terms of power, ability and accuracy of the estimated change-point location. The analysis is performed with synthetic data for different sample sizes, two types of change and different magnitudes of change. The methods studied are the Pettitt method, a method...journal article 2019
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Mostbauer, Karin (author), Kaitna, Roland (author), Prenner, D.K. (author), Hrachowitz, M. (author)Debris flows represent frequent hazards in mountain regions. Though significant effort has been made to predict such events, the trigger conditions as well as the hydrologic disposition of a watershed at the time of debris flow occurrence are not well understood. Traditional intensity-duration threshold techniques to establish trigger...journal article 2018
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Nijzink, R.C. (author), Almeida, S. (author), Pechlivanidis, I. G. (author), Capell, R. (author), Gustafssons, D. (author), Arheimer, B. (author), Parajka, J. (author), Freer, J. (author), Han, D. (author), Wagener, T. (author), van Nooijen, R.R.P. (author), Savenije, Hubert (author), Hrachowitz, M. (author)The calibration of hydrological models without streamflow observations is problematic, and the simultaneous, combined use of remotely sensed products for this purpose has not been exhaustively tested thus far. Our hypothesis is that the combined use of products can (1) reduce the parameter search space and (2) improve the representation of...journal article 2018
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Prenner, D.K. (author), Kaitna, R. (author), Mostbauer, K. (author), Hrachowitz, M. (author)Debris flows are typically triggered by rainfall-related weather conditions—including short-duration storms and long-lasting rainfall, in cold climates sometimes in connection with intensive snowmelt. Given the considerable observational uncertainties of rainfall, we tested if other hydrometeorological variables carry enough information...journal article 2018
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Bouaziz, L.J.E. (author), Weerts, Albrecht (author), Schellekens, Jaap (author), Sprokkereef, Eric (author), Stam, Jasper (author), Savenije, Hubert (author), Hrachowitz, M. (author)Intercatchment groundwater flows (IGFs), defined as groundwater flows across topographic divides, can occur as regional groundwater flows that bypass headwater streams and only drain into the channel further downstream or directly to the sea. However, groundwater flows can also be diverted to adjacent river basins due to geological features ...journal article 2018
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Hrachowitz, M. (author), Clark, Martyn P. (author)In hydrology, two somewhat competing philosophies form the basis of most process-based models. At one endpoint of this continuum are detailed, high-resolution descriptions of small-scale processes that are numerically integrated to larger scales (e.g. catchments). At the other endpoint of the continuum are spatially lumped representations of...journal article 2017
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Savenije, Hubert (author), Hrachowitz, M. (author)Catchment-scale hydrological models frequently miss essential characteristics of what determines the functioning of catchments. The most important active agent in catchments is the ecosystem. It manipulates and partitions moisture in a way that supports the essential functions of survival and productivity: infiltration of water, retention of...journal article 2017
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Drever, Mark C. (author), Hrachowitz, M. (author)Estimating the length-of-stay, the number of days a bird can be expected to stay at a site, at stopover sites is critical to understanding the migration ecology and estimating the population sizes of birds as they move between breeding and non-breeding sites. Estimating the length-of-stay of migrating animals at stopover sites has an analogue...journal article 2017
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Nijzink, R.C. (author), Hutton, Christopher (author), Pechlivanidis, Ilias (author), Capell, René (author), Arheimer, Berit (author), Freer, Jim (author), Han, Dawei (author), Wagener, Thorsten (author), McGuire, Kevin (author), Savenije, Hubert (author), Hrachowitz, M. (author)The core component of many hydrological systems, the moisture storage capacity available to vegetation, is impossible to observe directly at the catchment scale and is typically treated as a calibration parameter or obtained from a priori available soil characteristics combined with estimates of rooting depth. Often this parameter is...journal article 2016
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de Boer-Euser, Tanja (author), McMillan, H (author), Hrachowitz, M. (author), Winsemius, H.C. (author), Savenije, Hubert (author)Root zone storage capacity ( S r ) is an important variable for hydrology and climate studies, as it strongly influences the hydrological functioning of a catchment and, via evaporation, the local climate. Despite its importance, it remains difficult to obtain a well-founded catchment representative estimate. This study tests the hypothesis that...journal article 2016
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Hrachowitz, M. (author), Benettin, P (author), van Breukelen, B.M. (author), Fovet, O (author), Howden, Nicholas J.K. (author), Ruiz, L (author), van der Velde, Y (author), Wade, AJ (author)In spite of trying to understand processes in the same spatial domain, the catchment<br/>hydrology and water quality scientific communities are relatively disconnected<br/>and so are their respective models. This is emphasized by an inadequate<br/>representation of transport processes, in both catchment-scale hydrological and<br/>water quality...journal article 2016
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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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- Nijzink, R.C. (author), Samaniego, L (author), Mai, J (author), Kumar, R (author), Thober, S (author), Zink, M (author), Schafer, D (author), Savenije, Hubert (author), Hrachowitz, M. (author) journal article 2016
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- Euser, T. (author), McMillan, H. (author), Hrachowitz, M. (author), Winsemius, H. (author), Savenije, H.H.G. (author) journal article 2015
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- Hrachowitz, M. (author), Fovet, O. (author), Ruiz, L. (author), Savenije, H.H.G. (author) journal article 2015
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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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Rinaldo, A. (author), Benettin, P. (author), Harman, C.J. (author), Hrachowitz, M. (author), McGuire, K.J. (author), Van der Velde, Y. (author), Bertuzzo, E. (author), Botter, G. (author)We discuss a recent theoretical approach combining catchment-scale flow and transport processes into a unified framework. The approach is designed to characterize the hydrochemistry of hydrologic systems and to meet the challenges posed by empirical evidence. StorAge Selection functions (SAS) are defined to represent the way catchment storage...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