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| Titel |
Regional modelling of acidification in Wales; calibration of a spatially distributed model incorporating land use change |
| VerfasserIn |
R. Collins, A. Jenkins |
| 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 ; 2, no. 4 ; Nr. 2, no. 4, S.533-541 |
| Datensatznummer |
250000650
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| Publikation (Nr.) |
 copernicus.org/hess-2-533-1998.pdf |
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| Zusammenfassung |
| The Model of Acidification of Groundwater In Catchments
(MAGIC) has been calibrated to 94 catchments in Wales, enabling the quantification of
regional response to reduced emissions under the second sulphur protocol and incorporating
the potential impact of future changes in afforestation. To calibrate the model the
methodology utilises, for each site, the best available data derived from databases which
are consistent across the whole region but which vary in spatial resolution. The
calibrated model closely matches observed stream water chemistry across the region. The
predicted future response is a reduction in acidity of surface waters in the region. The
recovery is less marked at forested catchments, and some forested sites undergo a further
decrease in acid neutralising capacity (ANC). The predictions from the multiple-site
method are statistically consistent with those produced by an alternative regional
modelling method which is based upon Monte-Carlo procedures. The multiple-site method,
however, has the advantage of providing future predictions which are also spatially
distributed across the region. |
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