Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 418076
Title Climate change impacts on the leaching of a heavy metal contimination in a small lowland catchment
Author(s) Visser, A.; Kroes, J.G.; Vliet, M.T.H. van; Blenkinsop, S.; Fowler, H.J.; Broers, H.P.
Source Journal of Contaminant Hydrology 127 (2012)1-4. - ISSN 0169-7722 - p. 47 - 64.
DOI https://doi.org/10.1016/j.jconhyd.2011.04.007
Department(s) CWC - Integrated Water Resources Management
Earth System Science
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) surface-water contamination - regional climate - soil-moisture - model data - groundwater recharge - nitrogen deposition - multimodel ensemble - hydrological model - river flows - fresh-water
Abstract The Keersop catchment (43 km2) in the south of The Netherlands has been contaminated by the emissions of four zinc ore smelters. The objective of this study was to assess the effects of future projected climate change on the hydrology and the leaching of heavy metals (i.e. Cd and Zn) in the catchment. The numerical, quasi-2D, unsaturated zone Soil Water Atmosphere Plant model was used with 100-year simulated daily time series of precipitation and potential evapotranspiration. The time series are representative of stationary climates for the periods 1961–1990 (“baseline”) and 2071–2100 (“future”). The time series of future climate were obtained by downscaling the results of eight regional climate model (RCM) experiments, driven by the SRES A2 emissions scenario, using change factors for a series of climate statistics and applying them to stochastic weather generator models. The time series are characterized by increased precipitation in winter, less precipitation in summer, and higher air temperatures (between 2 °C and 5 °C) throughout the year. Future climate scenarios project higher evapotranspiration rates, more irrigation, less drainage, lower discharge rates and lower groundwater levels, due to increased evapotranspiration and a slowing down of the groundwater system. As a result, lower concentrations of Cd and Zn in surface water are projected. The reduced leaching of heavy metals, due to drying of the catchment, showed a positive impact on a limited aspect of surface water quality. --------------------------------------------------------------------------------
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