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Estimation of predictive hydrologic uncertainty using quantile regression and UNEEC methods and their comparison on contrasting catchments (discussion paper)

Dogulu, N. (author), Lopez Lopez, P. (author), Solomatine, D.P. (author), Weerts, A.H. (author), Shrestha, D.L. (author)

In operational hydrology, estimation of predictive uncertainty of hydrological models used for flood modelling is essential for risk based decision making for flood warning and emergency management. In the literature, there exists a variety of methods analyzing and predicting uncertainty. However, case studies comparing performance of these...

journal article 2014

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Determining slack tide with a GPS receiver on an anchored buoy

Valk, M. (author), Savenije, H.H.G. (author), Tiberius, C.C.J.M. (author), Luxemburg, W.M.J. (author)

In this paper we present a novel method to determine the time of occurrence of tidal slack with a GPS receiver mounted on an anchored buoy commonly used to delineate shipping lanes in estuaries and tidal channels. Slack tide occurs when the tide changes direction from ebb to flood flow or from flood to ebb. The determination of this point in...

journal article 2014

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Fiber optic distributed temperature sensing for the determination of air temperature

De Jong, S.A.P. (author), Slingerland, J.D. (author), Van de Giesen, N.C. (author)

This paper describes a method to correct for the effect of solar radiation in atmospheric Distributed Temperature Sensing (DTS) applications. By using two cables with different diameters, one can determine what temperature a zero diameter cable would have. Such virtual cable would not be affected by solar heating and would take on the...

journal article 2014

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eWaterCycle: A high resolution global hydrological model

Van de Giesen, N.C. (author), Bierkens, M. (author), Drost, N. (author), Hut, R.W. (author), Sutanudjaja, E. (author)

journal article 2014

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Fiverr MacGyver

Hut, R.W. (author), Van de Giesen, N.C. (author), Larson, M.A. (author)

journal article 2014

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Assimilating data from remote sensing into a high-resolution global hydrological model

Lu, Y. (author), Sutanudjaja, E. (author), Drost, N. (author), Hut, R.W. (author), Dunne, S.C. (author), Van de Giesen, N.C. (author), De Jong, K. (author), Van Beek, L. (author), Bierkens, M. (author)

journal article 2014

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Building topography in Cyprus and south Turkey: Geological constraints and geodynamic models

Fernandez-Blanco, D. (author), Bertotti, G. (author), Cassola, T. (author), Willett, S. (author)

journal article 2014

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Using umbrellas as mobile rain gauges: Prototype demonstration

Hut, R.W. (author), De Jong, S. (author), Van de Giesen, N.C. (author)

journal article 2014

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NOx emission estimates during the 2014 Youth Olympic Games in Nanjing (discussion paper)

Ding, J. (author), Van der A, R.J. (author), Mijling, B. (author), Levelt, P.F. (author), Hao, N. (author)

The Nanjing Government has taken temporary environmental regulations to guarantee good air quality during the Youth Olympic Games (YOG) in 2014. We study the effect of those regulations by applying the emission estimate algorithm DECSO (Daily Emission estimates Constrained by Satellite Observations) to measurements of the Ozone Monitoring...

journal article 2014

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Sensitivity of the OMI ozone profile retrieval (OMO3PR) to a priori assumptions

Mielonen, T. (author), De Haan, J.F. (author), Veefkind, J.P. (author)

We have assessed the sensitivity of the operational OMI ozone profile retrieval (OMO3PR) algorithm to a number of a priori assumptions. We studied the effect of stray light correction, surface albedo assumptions and a priori ozone profiles on the retrieved ozone profile. Then, we studied how to modify the algorithm to improve the retrieval of...

journal article 2014

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Evolving water science in the Anthropocene

Savenije, H.H.G. (author), Hoekstra, A.Y. (author), Van der Zaag, P. (author)

This paper reviews the changing relation between human beings and water since the Industrial Revolution, a period that has been called the Anthropocene because of the unprecedented scale at which humans have altered the planet during this time. We show how the rapidly changing world urges us to continuously improve our understanding of the...

journal article 2014

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Spatial evapotranspiration, rainfall and land use data in water accounting. Part 2: Reliability of water accounting results for policy decisions in the Awash basin

Karimi, P. (author), Bastiaanssen, W.G.M. (author), Sood, A. (author), Hoogeveen, J. (author), Peiser, L. (author), Bastidas Obando, E. (author), Dost, R. (author)

Water Accounting Plus (WAC) is a framework that summarizes complex hydrological processes and water management issues in river basins. The framework is designed to use satellite-based measurements of land and water variables and processes as input data. A general concern associated with the use of satellite measurements is their accuracy. This...

journal article 2014

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Spatial evapotranspiration, rainfall and land use data in water accounting. Part 1: Review of the accuracy of the remote sensing data

Karimi, P. (author), Bastiaanssen, W.G.M. (author)

The scarcity of water encourages scientists to develop new analytical tools to enhance water resource management. Water accounting and distributed hydrological models are examples of such tools. Water accounting needs accurate input data for adequate descriptions of water distribution and water depletion in river basins. Ground-based...

journal article 2014

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Linking the river to the estuary: Influence of river discharge on tidal damping

Cai, H. (author), Savenije, H.H.G. (author), Toffolon, M. (author)

The effect of river discharge on tidal damping in estuaries is explored within one consistent theoretical framework where analytical solutions are obtained by solving four implicit equations, i.e. the phase lag, the scaling, the damping and the celerity equation. In this approach the damping equation is obtained by subtracting the envelope...

journal article 2014

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High resolution weather data for urban hydrological modelling and impact assessment, ICT requirements and future challenges

Ten Veldhuis, J.A.E. (author), Van Riemsdijk, M.B. (author)

journal article 2013

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The effect of spatial throughfall pattern on soil moisture patterns at the hillslope scale

Coenders, A.M.J. (author), Hopp, L. (author), Savenije, H.H.G. (author), Pfister, L. (author)

Improving the understanding of the controls on subsurface stormflow generation has been the goal of numerous experimental and modeling studies. However, the effect of the spatial variability of throughfall on soil moisture patterns and subsurface stormflow (SSF) generation has not yet been studied in detail. The objectives of this study are...

journal article 2013

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Should we use a simple or complex model for moisture recycling and atmospherix moisture tracking?

Van der Ent, R.J. (author), Tuinenburg, O.A. (author), Knoche, H.R. (author), Kunstmann, H. (author), Savenije, H.H.G. (author)

This paper compares state-of-the-art atmospheric moisture tracking models. Such models are typically used to study the water component of coupled land and atmosphere models, in particular quantifying moisture recycling and the source-sink relations between evaporation and precipitation. There are several atmospheric moisture tracking methods in...

journal article 2013

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A strategy for “constraint-based” parameter specification for environmental models

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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Using expert knowledge to increase realism in environmental system models can dramatically reduce the need for calibration

Gharari, S. (author), Hrachowitz, M. (author), Fenecia, F. (author), Gao, H. (author), Savenije, H.H.G. (author)

Conceptual environmental systems models, such as rainfall runoff models, generally rely on calibration for parameter identification. Increasing complexity of this type of model for better representation of hydrological process heterogeneity typically makes parameter identification more difficult. Although various, potentially valuable,...

journal article 2013

document

Evolving water science in the Anthropocene

Savenije, H.H.G. (author), Hoekstra, A.Y. (author), Van der Zaag, P. (author)

This paper reviews the changing relation between man and water since the industrial revolution, the period that has been called the Anthropocene because of the unprecedented scale at which humans have altered the planet.We show how the rapidly changing reality urges us to continuously improve our understanding of the complex interactions between...

journal article 2013