Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores
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 v...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.517.4109 2023-05-15T16:29:21+02:00 Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores Manuel A The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.517.4109 http://transport.nilu.no/Members/jfb/items-1/2005jd006771.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.517.4109 http://transport.nilu.no/Members/jfb/items-1/2005jd006771.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://transport.nilu.no/Members/jfb/items-1/2005jd006771.pdf text ftciteseerx 2016-01-08T09:56:04Z 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 mg m2 yr1) 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. Text Greenland Greenland ice cores North Atlantic North Atlantic oscillation Unknown Greenland |
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ftciteseerx |
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English |
description |
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 mg m2 yr1) 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. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Manuel A |
spellingShingle |
Manuel A Influence of North Atlantic Oscillation on anthropogenic transport recorded in northwest Greenland ice cores |
author_facet |
Manuel A |
author_sort |
Manuel A |
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 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.517.4109 http://transport.nilu.no/Members/jfb/items-1/2005jd006771.pdf |
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_source |
http://transport.nilu.no/Members/jfb/items-1/2005jd006771.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.517.4109 http://transport.nilu.no/Members/jfb/items-1/2005jd006771.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766019054229782528 |