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Aydin, B.E. (author), Oude Essink, Gualbert H.P. (author), Delsman, Joost R. (author), van de Giesen, N.C. (author), Abraham, E. (author)A significant increase in surface water salinization in low-lying deltas is expected globally due to saline groundwater exfiltration driven by rising sea levels and decreasing freshwater availability. Sustaining fresh water-dependent agriculture in such areas will entail an increased demand for fresh water flushing. Unfortunately, the...journal article 2022
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Abdollahi, B. (author), Alidoost, Fakhereh (author), Moshir Panahi, Davood (author), Hut, R.W. (author), van de Giesen, N.C. (author)The reproducibility of computational hydrology is gaining attention among hydrologists. Reproducibility requires open and reusable code and data, allowing users to verify results and process new datasets. The creation of input files for global hydrological models (GHMs) requires complex high-resolution gridded dataset processing, limiting the...journal article 2022
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Aerts, J.P.M. (author), Hut, R.W. (author), van de Giesen, N.C. (author), Drost, Niels (author), van Verseveld, Willem J. (author), Weerts, Albrecht H. (author), Hazenberg, Pieter (author)Distributed hydrological modelling moves into the realm of hyper-resolution modelling. This results in a plethora of scaling-related challenges that remain unsolved. To the user, in light of model result interpretation, finer-resolution output might imply an increase in understanding of the complex interplay of heterogeneity within the...journal article 2022
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Krietemeyer, A. (author), van der Marel, H. (author), van de Giesen, N.C. (author), ten Veldhuis, Marie-claire (author)Low-cost dual-frequency receivers and antennas have created opportunities for a wide range of new applications, in regions and disciplines where traditional GNSS equipment is unaffordable. However, the major drawback of using low-cost antenna equipment is that antenna phase patterns are typically poorly defined. Therefore, the noise in...journal article 2022
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Salinas Rodriquez, Sergio (author), van de Giesen, N.C. (author), McClain, M.E. (author)Environmental flow (eflow) reference values play a key role in environmental water science and practice. In Mexico, eflow assessments are set by a norm in which the frequency of occurrence is the managing factor to integrate inter-annual and seasonal flow variability components into environmental water reserves. However, the frequency parameters...journal article 2022
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Gründemann, Gaby J. (author), van de Giesen, N.C. (author), Brunner, Lukas (author), van der Ent, R.J. (author)Future rainfall extremes are projected to increase with global warming according to theory and climate models, but common (annual) and rare (decennial or centennial) extremes could be affected differently. Here, using 25 models from the Coupled Model Intercomparison Project Phase 6 driven by a range of plausible scenarios of future greenhouse...journal article 2022
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van Amelrooij, Edward (author), van de Giesen, N.C. (author), Plomp, J. (author), Thijs, M.A. (author), Fico, Tomáš (author)A newly developed Boron-based Large-scale Observation of Soil Moisture (or BLOSM) system is currently being tested and implemented. The stationary system provides a cost-effective way to measure fast and thermalized neutrons by using low-cost, non–hazardous and accessible materials and equipment. BLOSM operates by measuring cosmic-ray induced...journal article 2022
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Kaandorp, C. (author), van de Giesen, N.C. (author), Abraham, E. (author)Sustainable energy systems can only be achieved when reducing both carbon emissions and water use for energy generation. Water-energy nexus studies are therefore crucial for supporting environmental policy oriented towards the mobilisation of resources in an optimally integrated way. Decarbonizing heating infrastructures is an important part of...abstract 2021
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Dorigo, Wouter (author), Himmelbauer, Irene (author), Aberer, Daniel (author), Schremmer, Lukas (author), Petrakovic, Ivana (author), Zappa, Luca (author), Preimesberger, Wolfgang (author), Annor, F.O. (author), van de Giesen, N.C. (author)In 2009, the International Soil Moisture Network (ISMN) was initiated as a community effort, funded by the European Space Agency, to serve as a centralised data hosting facility for globally available in situ soil moisture measurements . The ISMN brings together in situ soil moisture measurements collected and freely shared by a multitude of...review 2021
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Broere, S. (author), van Emmerik, Tim (author), González-Fernández, Daniel (author), Luxemburg, W.M.J. (author), de Schipper, M.A. (author), Cózar, Andrés (author), van de Giesen, N.C. (author)Plastics originating from land are mainly transported to the oceans by rivers. The total plastic transport from land to seas remains uncertain because of difficulties in measuring and the lack of standard observation techniques. A large focus in observations is on plastics floating on the water surface. However, an increasing number of...journal article 2021
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de Villiers, D.J. (author), Schleiss, M.A. (author), ten Veldhuis, Marie-claire (author), Hut, R.W. (author), van de Giesen, N.C. (author)A new type of rainfall sensor (the intervalometer), which counts the arrival of raindrops at a piezo electric element, is implemented during the Tanzanian monsoon season alongside tipping bucket rain gauges and an impact disdrometer. The aim is to test the validity of the Poisson hypothesis underlying the estimation of rainfall rates using an...journal article 2021
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le Coz, C.M.L. (author), Heemink, A.W. (author), Verlaan, M. (author), van de Giesen, N.C. (author)Many satellite-based estimates use gauge information for bias correction. In general, bias-correction methods are focused on the intensity error and do not explicitly correct possible position or timing errors. However, position and timing errors in rainfall estimates can also lead to errors in the rainfall occurrence or the intensity. This is...journal article 2021
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Kaandorp, C. (author), van de Giesen, N.C. (author), Abraham, E. (author)Sustainable energy systems can only be achieved when reducing both carbon emissions and water use for energy generation. Although the water use for electricity generation has been well studied, integrated assessments of the water use by low-carbon heat systems are lacking. In this paper we present an analysis of the water use of scenarios for...journal article 2021
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Krietemeyer, A. (author), van der Marel, H. (author), van de Giesen, N.C. (author), ten Veldhuis, Marie-claire (author)The recent release of consumer-grade dual-frequency receivers sparked scientific interest into use of these cost-efficient devices for high precision positioning and tropospheric delay estimations. Previous analyses with low-cost single-frequency receivers showed promising results for the estimation of Zenith Tropospheric Delays (ZTDs)....journal article 2020
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Dembele, Moctar (author), Schaefli, Bettina (author), van de Giesen, N.C. (author), Mariéthoz, Grégoire (author)<p>This study evaluates the ability of different gridded rainfall datasets to plausibly represent the spatio-temporal patterns of multiple hydrological processes (i.e. streamflow, actual evaporation, soil moisture and terrestrial water storage) for large-scale hydrological modelling in the predominantly semi-arid Volta River basin (VRB) in...journal article 2020
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Wang, Z. (author), Hut, R.W. (author), van de Giesen, N.C. (author)Particle filters are non-Gaussian filters, which means that the assumption that the error distribution of the ensemble should be Gaussian is unnecessary. Like the ensemble Kalman filter, particle filters are based on the Monte Carlo approximation to represent the distribution of model states. It requires a substantial number of particles to...journal article 2020
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Mrad, Assaad (author), Katul, Gabriel G. (author), Levia, Delphis F. (author), Guswa, Andrew J. (author), Boyer, Elizabeth W. (author), Bruen, Michael (author), Carlyle-Moses, Darryl E. (author), Coyte, Rachel (author), van de Giesen, N.C. (author)Irrigated agriculture contributes 40% of total global food production. In the US High Plains, which produces more than 50 million tons per year of grain, as much as 90% of irrigation originates from groundwater resources, including the Ogallala aquifer. In parts of the High Plains, groundwater resources are being depleted so rapidly that they...journal article 2020
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Honingh, D.F. (author), van Emmerik, Tim (author), Uijttewaal, W.S.J. (author), Kardhana, Hadi (author), Hoes, O.A.C. (author), van de Giesen, N.C. (author)Plastic debris in water systems is a major challenge for our ecosystem, because it is extremely persistent in the environment. Apart from the importance of reducing the amount of plastic entering the ocean, clearing the rivers from debris is important for societal concerns, such as flood risks. Plastic waste accumulation at trash racks leads...journal article 2020
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Lu, S. (author), ten Veldhuis, Marie-claire (author), van de Giesen, N.C. (author), Heemink, A.W. (author), Verlaan, M. (author)Satellite and reanalysis precipitation products perform poorly over regions with low-density ground observation networks. In order to improve space-dependent parameterization of precipitation estimation models in data-scarce environments, the delineation boundaries of precipitation regimes should be accurately identified. Existing approaches...journal article 2020
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Ssenyunzi, Richard Cliffe (author), Oruru, Bosco (author), D'ujanga, Florence Mutonyi (author), Realini, Eugenio (author), Barindelli, Stefano (author), Tagliaferro, Giulio (author), von Engeln, Axel (author), van de Giesen, N.C. (author)The accuracy of surface meteorological measurements is vital to derive accurate Global Positioning System (GPS) Precipitable Water Vapour (PWV) data. However, in absence of surface meteorological data, data from Numerical Weather Prediction Models (NWP) are used. The accuracy of these models varies depending on the model, region, season and...journal article 2020