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Dissolved organic carbon trends resulting from changes in atmospheric deposition chemistry

Dissolved organic carbon trends resulting from changes in atmospheric deposition chemistry There have been widespread reports of surface waters in many remote glaciated regions of North America and Northern Europe becoming browner as levels of dissolved organic carbon have increased. Several hypotheses have been proposed to explain the effect, including recent climate change, but the question remains controversial. A new survey of time series data from more than 500 remote lakes and streams, combined with a simple model, now shows that dissolved organic carbon concentrations are in fact closely related to the decline in the sulphate and seasalt content of atmospheric deposition. Dissolved organic carbon concentrations may therefore be returning towards levels that would have been typical prior to the first onset of acid rain during the nineteenth century. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Springer Journals

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References (37)

Publisher
Springer Journals
Copyright
Copyright © 2007 by Nature Publishing Group
Subject
Science, Humanities and Social Sciences, multidisciplinary; Science, Humanities and Social Sciences, multidisciplinary; Science, multidisciplinary
ISSN
0028-0836
eISSN
1476-4687
DOI
10.1038/nature06316
Publisher site
See Article on Publisher Site

Abstract

There have been widespread reports of surface waters in many remote glaciated regions of North America and Northern Europe becoming browner as levels of dissolved organic carbon have increased. Several hypotheses have been proposed to explain the effect, including recent climate change, but the question remains controversial. A new survey of time series data from more than 500 remote lakes and streams, combined with a simple model, now shows that dissolved organic carbon concentrations are in fact closely related to the decline in the sulphate and seasalt content of atmospheric deposition. Dissolved organic carbon concentrations may therefore be returning towards levels that would have been typical prior to the first onset of acid rain during the nineteenth century.

Journal

NatureSpringer Journals

Published: Nov 22, 2007

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