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| Titel |
Climate change impacts on nutrient loads in the Yorkshire Ouse catchment (UK) |
| VerfasserIn |
F. Bouraoui, L. Galbiati, G. Bidoglio |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 6, no. 2 ; Nr. 6, no. 2, S.197-209 |
| Datensatznummer |
250003454
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| Publikation (Nr.) |
 copernicus.org/hess-6-197-2002.pdf |
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| Zusammenfassung |
| This study assessed the
impact of potential climate change on the nutrient loads to surface and
sub-surface waters from agricultural areas and was conducted using the Soil and
Water Assessment Tool (SWAT) model. The study focused on a 3500 km2
catchment located in northern England, the Yorkshire Ouse. The SWAT model was
calibrated and validated using sets of five years' measurements of nitrate and
ortho-phosphorus concentrations and water flow. To increase the reliability of
the hydrological model predictions, an uncertainty analysis was conducted by
perturbing input parameters using a Monte-Carlo technique. The SWAT model was
then run using a baseline scenario corresponding to an actual measured time
series of daily temperature and precipitation, and six climate change scenarios.
Because of the increase in temperature, all climate scenarios introduced an
increase of actual evapotranspiration. Faster crop growth and an increased
nutrient uptake resulted, as did an increase of annual losses of total nitrogen
and phosphorus, however, with strong seasonal differences.
Keywords: SWAT model, climate change, nutrient loads |
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