Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores
Nitrate records from six Greenland ice cores covering the period 1789 to 1995 show a significant correlation in concentration for averaging periods greater than 10 years, as well as an approximately 60% increase in average concentration during the last 75 years. Annual nitrate fluxes contain low-fre...
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American Geophysical Union
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ftnerc:oai:nora.nerc.ac.uk:918 2024-06-09T07:46:23+00:00 Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores Burkhart, John F. Bales, Roger C. McConnell, Joseph R. Hutterli, Manuel A. 2006 http://nora.nerc.ac.uk/id/eprint/918/ http://www.agu.org/pubs/crossref/2006/2005JD006771.shtml https://doi.org/10.1029/2005JD006771 unknown American Geophysical Union Burkhart, John F.; Bales, Roger C.; McConnell, Joseph R.; Hutterli, Manuel A. 2006 Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores. Journal of Geophysical Research, 111 (D22), D22309. 14, pp. https://doi.org/10.1029/2005JD006771 <https://doi.org/10.1029/2005JD006771> Glaciology Publication - Article PeerReviewed 2006 ftnerc https://doi.org/10.1029/2005JD006771 2024-05-15T08:39:04Z Nitrate records from six Greenland ice cores covering the period 1789 to 1995 show a significant correlation in concentration for averaging periods greater than 10 years, as well as an approximately 60% increase in average concentration during the last 75 years. Annual nitrate fluxes contain low-frequency trends driven primarily by changes in concentration, while higher-frequency variability is driven by changes in snow accumulation. Increases in concentration yield nearly 30% higher nitrate flux (2.5 to 3.2 μg m−2 yr−1) and an 11% increase in variability during the 1895 to 1994 period versus the prior 100 years. Nitrate trends in the cores during the last 100 years are also correlated with global nitrate emissions, with a highly significant average r value of 0.93 for the six cores. During the period of anthropogenic influence, nitrate is positively correlated with the North Atlantic Oscillation, while prior to that the correlation is negative, and less significant, suggesting a link between transport of anthropogenic emissions and the North Atlantic Oscillation. Significant preanthropogenic periodicities identified through singular spectrum analysis show decadal variability in the nitrate record leading to shifts as great as 30% from the mean state but none as great as the anthropogenic-driven deviation Article in Journal/Newspaper Greenland Greenland ice cores North Atlantic North Atlantic oscillation Natural Environment Research Council: NERC Open Research Archive Greenland Journal of Geophysical Research 111 D22 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Glaciology |
spellingShingle |
Glaciology Burkhart, John F. Bales, Roger C. McConnell, Joseph R. Hutterli, Manuel A. Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores |
topic_facet |
Glaciology |
description |
Nitrate records from six Greenland ice cores covering the period 1789 to 1995 show a significant correlation in concentration for averaging periods greater than 10 years, as well as an approximately 60% increase in average concentration during the last 75 years. Annual nitrate fluxes contain low-frequency trends driven primarily by changes in concentration, while higher-frequency variability is driven by changes in snow accumulation. Increases in concentration yield nearly 30% higher nitrate flux (2.5 to 3.2 μg m−2 yr−1) and an 11% increase in variability during the 1895 to 1994 period versus the prior 100 years. Nitrate trends in the cores during the last 100 years are also correlated with global nitrate emissions, with a highly significant average r value of 0.93 for the six cores. During the period of anthropogenic influence, nitrate is positively correlated with the North Atlantic Oscillation, while prior to that the correlation is negative, and less significant, suggesting a link between transport of anthropogenic emissions and the North Atlantic Oscillation. Significant preanthropogenic periodicities identified through singular spectrum analysis show decadal variability in the nitrate record leading to shifts as great as 30% from the mean state but none as great as the anthropogenic-driven deviation |
format |
Article in Journal/Newspaper |
author |
Burkhart, John F. Bales, Roger C. McConnell, Joseph R. Hutterli, Manuel A. |
author_facet |
Burkhart, John F. Bales, Roger C. McConnell, Joseph R. Hutterli, Manuel A. |
author_sort |
Burkhart, John F. |
title |
Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores |
title_short |
Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores |
title_full |
Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores |
title_fullStr |
Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores |
title_full_unstemmed |
Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores |
title_sort |
influence of north atlantic oscillation on anthropogenic transport recorded in northwest greenland ice cores |
publisher |
American Geophysical Union |
publishDate |
2006 |
url |
http://nora.nerc.ac.uk/id/eprint/918/ http://www.agu.org/pubs/crossref/2006/2005JD006771.shtml https://doi.org/10.1029/2005JD006771 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores North Atlantic North Atlantic oscillation |
genre_facet |
Greenland Greenland ice cores North Atlantic North Atlantic oscillation |
op_relation |
Burkhart, John F.; Bales, Roger C.; McConnell, Joseph R.; Hutterli, Manuel A. 2006 Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores. Journal of Geophysical Research, 111 (D22), D22309. 14, pp. https://doi.org/10.1029/2005JD006771 <https://doi.org/10.1029/2005JD006771> |
op_doi |
https://doi.org/10.1029/2005JD006771 |
container_title |
Journal of Geophysical Research |
container_volume |
111 |
container_issue |
D22 |
_version_ |
1801376208835837952 |