Assessing the Impacts of Long-Range Sulfur and Nitrogen Deposition on Arctic and Sub-Arctic Ecosystems
For more than a decade, anthropogenic sulfur (S) and nitrogen (N) deposition has been identified as a key pollutant in the Arctic. In this study new critical loads of acidity (S and N) were estimated for terrestrial ecosystems north of 60° latitude by applying the Simple Mass Balance (SMB) model usi...
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ftpubmed:oai:pubmedcentral.nih.gov:3357685 2023-05-15T14:50:28+02:00 Assessing the Impacts of Long-Range Sulfur and Nitrogen Deposition on Arctic and Sub-Arctic Ecosystems Forsius, Martin Posch, Maximilian Aherne, Julian Reinds, Gert Jan Christensen, Jesper Hole, Lars 2010-05-04 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3357685 http://www.ncbi.nlm.nih.gov/pubmed/20653276 https://doi.org/10.1007/s13280-010-0022-7 en eng Springer Netherlands http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3357685 http://www.ncbi.nlm.nih.gov/pubmed/20653276 http://dx.doi.org/10.1007/s13280-010-0022-7 © Royal Swedish Academy of Sciences 2010 Report Text 2010 ftpubmed https://doi.org/10.1007/s13280-010-0022-7 2013-09-04T07:35:53Z For more than a decade, anthropogenic sulfur (S) and nitrogen (N) deposition has been identified as a key pollutant in the Arctic. In this study new critical loads of acidity (S and N) were estimated for terrestrial ecosystems north of 60° latitude by applying the Simple Mass Balance (SMB) model using two critical chemical criteria (Al/Bc = 1 and ANCle = 0). Critical loads were exceeded in large areas of northern Europe and the Norilsk region in western Siberia during the 1990s, with the more stringent criterion (ANCle = 0) showing the larger area of exceedance. However, modeled deposition estimates indicate that mean concentrations of sulfur oxides and total S deposition within the Arctic almost halved between 1990 and 2000. The modeled exceeded area is much reduced when currently agreed emission reductions are applied, and almost disappears under the implementation of maximum technically feasible reductions by 2020. In northern North America there was no exceedance under any of the deposition scenarios applied. Modeled N deposition was less than 5 kg ha−1 y−1 almost across the entire study area for all scenarios; and therefore empirical critical loads for the eutrophying impact of nitrogen are unlikely to be exceeded. The reduction in critical load exceedances is supported by observed improvements in surface water quality, whereas the observed extensive damage of terrestrial vegetation around the mining and smelter complexes in the area is mainly caused by direct impacts of air pollution and metals. Text Arctic norilsk Siberia PubMed Central (PMC) Arctic Norilsk ENVELOPE(88.203,88.203,69.354,69.354) AMBIO 39 2 136 147 |
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Report Forsius, Martin Posch, Maximilian Aherne, Julian Reinds, Gert Jan Christensen, Jesper Hole, Lars Assessing the Impacts of Long-Range Sulfur and Nitrogen Deposition on Arctic and Sub-Arctic Ecosystems |
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Report |
description |
For more than a decade, anthropogenic sulfur (S) and nitrogen (N) deposition has been identified as a key pollutant in the Arctic. In this study new critical loads of acidity (S and N) were estimated for terrestrial ecosystems north of 60° latitude by applying the Simple Mass Balance (SMB) model using two critical chemical criteria (Al/Bc = 1 and ANCle = 0). Critical loads were exceeded in large areas of northern Europe and the Norilsk region in western Siberia during the 1990s, with the more stringent criterion (ANCle = 0) showing the larger area of exceedance. However, modeled deposition estimates indicate that mean concentrations of sulfur oxides and total S deposition within the Arctic almost halved between 1990 and 2000. The modeled exceeded area is much reduced when currently agreed emission reductions are applied, and almost disappears under the implementation of maximum technically feasible reductions by 2020. In northern North America there was no exceedance under any of the deposition scenarios applied. Modeled N deposition was less than 5 kg ha−1 y−1 almost across the entire study area for all scenarios; and therefore empirical critical loads for the eutrophying impact of nitrogen are unlikely to be exceeded. The reduction in critical load exceedances is supported by observed improvements in surface water quality, whereas the observed extensive damage of terrestrial vegetation around the mining and smelter complexes in the area is mainly caused by direct impacts of air pollution and metals. |
format |
Text |
author |
Forsius, Martin Posch, Maximilian Aherne, Julian Reinds, Gert Jan Christensen, Jesper Hole, Lars |
author_facet |
Forsius, Martin Posch, Maximilian Aherne, Julian Reinds, Gert Jan Christensen, Jesper Hole, Lars |
author_sort |
Forsius, Martin |
title |
Assessing the Impacts of Long-Range Sulfur and Nitrogen Deposition on Arctic and Sub-Arctic Ecosystems |
title_short |
Assessing the Impacts of Long-Range Sulfur and Nitrogen Deposition on Arctic and Sub-Arctic Ecosystems |
title_full |
Assessing the Impacts of Long-Range Sulfur and Nitrogen Deposition on Arctic and Sub-Arctic Ecosystems |
title_fullStr |
Assessing the Impacts of Long-Range Sulfur and Nitrogen Deposition on Arctic and Sub-Arctic Ecosystems |
title_full_unstemmed |
Assessing the Impacts of Long-Range Sulfur and Nitrogen Deposition on Arctic and Sub-Arctic Ecosystems |
title_sort |
assessing the impacts of long-range sulfur and nitrogen deposition on arctic and sub-arctic ecosystems |
publisher |
Springer Netherlands |
publishDate |
2010 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3357685 http://www.ncbi.nlm.nih.gov/pubmed/20653276 https://doi.org/10.1007/s13280-010-0022-7 |
long_lat |
ENVELOPE(88.203,88.203,69.354,69.354) |
geographic |
Arctic Norilsk |
geographic_facet |
Arctic Norilsk |
genre |
Arctic norilsk Siberia |
genre_facet |
Arctic norilsk Siberia |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3357685 http://www.ncbi.nlm.nih.gov/pubmed/20653276 http://dx.doi.org/10.1007/s13280-010-0022-7 |
op_rights |
© Royal Swedish Academy of Sciences 2010 |
op_doi |
https://doi.org/10.1007/s13280-010-0022-7 |
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39 |
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2 |
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136 |
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147 |
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