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| Titel |
Major, minor and trace element composition of cloudwater and rainwater at Plynlimon |
| VerfasserIn |
J. Wilkinson, B. Reynolds, C. Neal, S. Hill, M. Neal, M. Harrow |
| 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 ; 1, no. 3 ; Nr. 1, no. 3, S.557-569 |
| Datensatznummer |
250000199
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| Publikation (Nr.) |
 copernicus.org/hess-1-557-1997.pdf |
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| Zusammenfassung |
| The composition of cloudwater samples collected at
Plynlimon, Mid Wales by the Institute of Hydrology is described based on one of the most comprehensive chemical
records for deposition in the UK. Comparison with bulk rainwater samples for the same area
demonstrates a tenfold enrichment of most elements in cloudwater. Large variations in cloudwater
composition occur due to variations in marine and terrestrial/anthropogenic sources,
general weather patterns, atmospheric circulation and seasonal effects. All trace metal concentrations
are associated with anthropogenic contamination. The lanthanides La, Cc and Pr, and Y are
highly correlated in ratios associated with lithogenic sources and fossil fuel combustion.
Outliers suggest the influence of catalysts used in the petrochemical cracking process.
Plantation forestry significantly enhances the annual deposition of solutes from cloudwater;
between 15 and 40% of most constituents to upland forested catchments and around 50% for
NO3, B and Cd come from cloud deposition. In upland moorland areas, only 10%
of the annual
deposited load of inorganic constituents comes from cloudwater. |
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