The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core
We present a high-resolution record of water-soluble ion chemistry from a 121 m ice core spanning about 800 years. The core is well dated to 2/3 depth using cycle counting and reference horizons and a simple but close fitting model for the lower 1/3 of the core. This core suffers from modest seasona...
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American Geophysical Union
2005
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Online Access: | http://nora.nerc.ac.uk/id/eprint/1825/ http://www.agu.org/pubs/crossref/2005/2004JD005223.shtml https://doi.org/10.1029/2004JD005223 |
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ftnerc:oai:nora.nerc.ac.uk:1825 2024-06-09T07:46:41+00:00 The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core Kekonen, Teija Moore, John Peramaki, Paavo Mulvaney, Robert Isaksson, Elisabeth Pohjola, Veijo van de Wal, Roderick S.W. 2005 http://nora.nerc.ac.uk/id/eprint/1825/ http://www.agu.org/pubs/crossref/2005/2004JD005223.shtml https://doi.org/10.1029/2004JD005223 unknown American Geophysical Union Kekonen, Teija; Moore, John; Peramaki, Paavo; Mulvaney, Robert orcid:0000-0002-5372-8148 Isaksson, Elisabeth; Pohjola, Veijo; van de Wal, Roderick S.W. 2005 The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core. Journal of Geophysical Research, 110 (D7), D07304. 11, pp. https://doi.org/10.1029/2004JD005223 <https://doi.org/10.1029/2004JD005223> Glaciology Publication - Article PeerReviewed 2005 ftnerc https://doi.org/10.1029/2004JD005223 2024-05-15T08:42:16Z We present a high-resolution record of water-soluble ion chemistry from a 121 m ice core spanning about 800 years. The core is well dated to 2/3 depth using cycle counting and reference horizons and a simple but close fitting model for the lower 1/3 of the core. This core suffers from modest seasonal melt, and so we present concentration data in decadal running means to minimize percolation effects. Sea-salt ions (Na+, Cl−, Mg2+, and K+) account for more than 70% of all ions. In general, sea-salt ion concentrations are rather variable and have no clear association with climatic variations. Sulfate, with 74% being from non-sea-salt sources, has higher concentrations than seen on Vestfonna ice cap but lower than in Ny-Ålesund aerosols, suggesting central Spitsbergen receives more marine (westerly) air masses than Ny-Ålesund but more sulfate enriched (easterly) air masses than Nordaustlandet. Clear anthropogenic impacts are found for sulfate, nitrate, and ammonium (and probably excess chloride) after the mid twentieth century, with sulfate showing a significant rise by the end of the nineteenth century. Sulfate and methanesulfonate concentrations correlate well during the twentieth century, and it is clear that most of the preindustrial sulfate is of biogenic origin. Terrestrial component (Ca2+) has the highest concentrations in the coldest part of the Little Ice Age, suggesting more windy conditions, transporting local terrestrial dust to the ice cap. All ion concentrations decrease at the end of the twentieth century, which reflects loss of ions by runoff, with non-sea-salt magnesium being particularly sensitive to melting. Article in Journal/Newspaper Ice cap ice core Nordaustlandet Ny Ålesund Ny-Ålesund Svalbard Vestfonna Spitsbergen Natural Environment Research Council: NERC Open Research Archive Lomonosovfonna ENVELOPE(17.663,17.663,78.774,78.774) Nordaustlandet ENVELOPE(22.400,22.400,79.800,79.800) Ny-Ålesund Svalbard Vestfonna ENVELOPE(20.761,20.761,79.941,79.941) Journal of Geophysical Research 110 D7 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Glaciology |
spellingShingle |
Glaciology Kekonen, Teija Moore, John Peramaki, Paavo Mulvaney, Robert Isaksson, Elisabeth Pohjola, Veijo van de Wal, Roderick S.W. The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core |
topic_facet |
Glaciology |
description |
We present a high-resolution record of water-soluble ion chemistry from a 121 m ice core spanning about 800 years. The core is well dated to 2/3 depth using cycle counting and reference horizons and a simple but close fitting model for the lower 1/3 of the core. This core suffers from modest seasonal melt, and so we present concentration data in decadal running means to minimize percolation effects. Sea-salt ions (Na+, Cl−, Mg2+, and K+) account for more than 70% of all ions. In general, sea-salt ion concentrations are rather variable and have no clear association with climatic variations. Sulfate, with 74% being from non-sea-salt sources, has higher concentrations than seen on Vestfonna ice cap but lower than in Ny-Ålesund aerosols, suggesting central Spitsbergen receives more marine (westerly) air masses than Ny-Ålesund but more sulfate enriched (easterly) air masses than Nordaustlandet. Clear anthropogenic impacts are found for sulfate, nitrate, and ammonium (and probably excess chloride) after the mid twentieth century, with sulfate showing a significant rise by the end of the nineteenth century. Sulfate and methanesulfonate concentrations correlate well during the twentieth century, and it is clear that most of the preindustrial sulfate is of biogenic origin. Terrestrial component (Ca2+) has the highest concentrations in the coldest part of the Little Ice Age, suggesting more windy conditions, transporting local terrestrial dust to the ice cap. All ion concentrations decrease at the end of the twentieth century, which reflects loss of ions by runoff, with non-sea-salt magnesium being particularly sensitive to melting. |
format |
Article in Journal/Newspaper |
author |
Kekonen, Teija Moore, John Peramaki, Paavo Mulvaney, Robert Isaksson, Elisabeth Pohjola, Veijo van de Wal, Roderick S.W. |
author_facet |
Kekonen, Teija Moore, John Peramaki, Paavo Mulvaney, Robert Isaksson, Elisabeth Pohjola, Veijo van de Wal, Roderick S.W. |
author_sort |
Kekonen, Teija |
title |
The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core |
title_short |
The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core |
title_full |
The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core |
title_fullStr |
The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core |
title_full_unstemmed |
The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core |
title_sort |
800 year long ion record from the lomonosovfonna (svalbard) ice core |
publisher |
American Geophysical Union |
publishDate |
2005 |
url |
http://nora.nerc.ac.uk/id/eprint/1825/ http://www.agu.org/pubs/crossref/2005/2004JD005223.shtml https://doi.org/10.1029/2004JD005223 |
long_lat |
ENVELOPE(17.663,17.663,78.774,78.774) ENVELOPE(22.400,22.400,79.800,79.800) ENVELOPE(20.761,20.761,79.941,79.941) |
geographic |
Lomonosovfonna Nordaustlandet Ny-Ålesund Svalbard Vestfonna |
geographic_facet |
Lomonosovfonna Nordaustlandet Ny-Ålesund Svalbard Vestfonna |
genre |
Ice cap ice core Nordaustlandet Ny Ålesund Ny-Ålesund Svalbard Vestfonna Spitsbergen |
genre_facet |
Ice cap ice core Nordaustlandet Ny Ålesund Ny-Ålesund Svalbard Vestfonna Spitsbergen |
op_relation |
Kekonen, Teija; Moore, John; Peramaki, Paavo; Mulvaney, Robert orcid:0000-0002-5372-8148 Isaksson, Elisabeth; Pohjola, Veijo; van de Wal, Roderick S.W. 2005 The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core. Journal of Geophysical Research, 110 (D7), D07304. 11, pp. https://doi.org/10.1029/2004JD005223 <https://doi.org/10.1029/2004JD005223> |
op_doi |
https://doi.org/10.1029/2004JD005223 |
container_title |
Journal of Geophysical Research |
container_volume |
110 |
container_issue |
D7 |
_version_ |
1801376648060207104 |