Increasing carbon inventory of the intermediate layers of the Arctic Ocean
Concentrations of dissolved inorganic carbon (DIC), total alkalinity (TA), nutrients, and oxygen in subsurface waters of the central Arctic Ocean have been investigated for conceivable time trends over the last two decades. Data from six cruises (1991-2011) that cover the Nansen, Amundsen, and Makar...
Published in: | Journal of Geophysical Research: Oceans |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://hdl.handle.net/11370/96af509b-fa6b-48f9-9b97-5b42a4760933 https://research.rug.nl/en/publications/96af509b-fa6b-48f9-9b97-5b42a4760933 https://doi.org/10.1002/2013JC009514 https://pure.rug.nl/ws/files/999193284/JGR_Oceans_-_2014_-_Ericson_-_Increasing_carbon_inventory_of_the_intermediate_layers_of_the_Arctic_Ocean.pdf http://www.scopus.com/inward/record.url?scp=84900563531&partnerID=8YFLogxK |
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ftunigroningenpu:oai:pure.rug.nl:publications/96af509b-fa6b-48f9-9b97-5b42a4760933 2024-09-15T17:50:44+00:00 Increasing carbon inventory of the intermediate layers of the Arctic Ocean Ericson, Ylva Ulfsbo, Adam Van Heuven, Steven Kattner, Gerhard Anderson, Leif G. 2014-04 application/pdf https://hdl.handle.net/11370/96af509b-fa6b-48f9-9b97-5b42a4760933 https://research.rug.nl/en/publications/96af509b-fa6b-48f9-9b97-5b42a4760933 https://doi.org/10.1002/2013JC009514 https://pure.rug.nl/ws/files/999193284/JGR_Oceans_-_2014_-_Ericson_-_Increasing_carbon_inventory_of_the_intermediate_layers_of_the_Arctic_Ocean.pdf http://www.scopus.com/inward/record.url?scp=84900563531&partnerID=8YFLogxK eng eng https://research.rug.nl/en/publications/96af509b-fa6b-48f9-9b97-5b42a4760933 info:eu-repo/semantics/openAccess Ericson , Y , Ulfsbo , A , Van Heuven , S , Kattner , G & Anderson , L G 2014 , ' Increasing carbon inventory of the intermediate layers of the Arctic Ocean ' , Journal of geophysical research: Oceans , vol. 119 , no. 4 , pp. 2312-2326 . https://doi.org/10.1002/2013JC009514 anthropogenic carbon Arctic Ocean article 2014 ftunigroningenpu https://doi.org/10.1002/2013JC009514 2024-06-24T16:47:00Z Concentrations of dissolved inorganic carbon (DIC), total alkalinity (TA), nutrients, and oxygen in subsurface waters of the central Arctic Ocean have been investigated for conceivable time trends over the last two decades. Data from six cruises (1991-2011) that cover the Nansen, Amundsen, and Makarov Basins were included in this analysis. In waters deeper than 2000 m, no statistically significant trend could be observed for DIC, TA, phosphate, or nitrate, but a small rate of increase in apparent oxygen utilization (AOU) was noticeable. For the individual stations, differences in concentration of each property were computed between the mean concentrations in the Arctic Atlantic Water (AAW) or the upper Polar Deep Water (uPDW), i.e., between about 150 and 1400 m depth, and in the deep water (assumed invariable over time). In these shallower water layers, we observe significant above-zero time trends for DIC, in the range of 0.6-0.9 μmol kg -1 yr -1 (for AAW) and 0.4-0.6 μmol kg -1 yr -1 (for uPDW). No time trend in nutrients could be observed, indicating no change in the rate of organic matter mineralization within this depth range. Consequently, the buildup of DIC is attributed to increasing concentrations of anthropogenic carbon in the waters flowing into these depth layers of the Arctic Ocean. The resulting rate of increase of the column inventory of anthropogenic CO 2 is estimated to be between 0.6 and 0.9 mol C m -2 yr -1 , with distinct differences between basins. Article in Journal/Newspaper Arctic Arctic Ocean University of Groningen research database Journal of Geophysical Research: Oceans 119 4 2312 2326 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
anthropogenic carbon Arctic Ocean |
spellingShingle |
anthropogenic carbon Arctic Ocean Ericson, Ylva Ulfsbo, Adam Van Heuven, Steven Kattner, Gerhard Anderson, Leif G. Increasing carbon inventory of the intermediate layers of the Arctic Ocean |
topic_facet |
anthropogenic carbon Arctic Ocean |
description |
Concentrations of dissolved inorganic carbon (DIC), total alkalinity (TA), nutrients, and oxygen in subsurface waters of the central Arctic Ocean have been investigated for conceivable time trends over the last two decades. Data from six cruises (1991-2011) that cover the Nansen, Amundsen, and Makarov Basins were included in this analysis. In waters deeper than 2000 m, no statistically significant trend could be observed for DIC, TA, phosphate, or nitrate, but a small rate of increase in apparent oxygen utilization (AOU) was noticeable. For the individual stations, differences in concentration of each property were computed between the mean concentrations in the Arctic Atlantic Water (AAW) or the upper Polar Deep Water (uPDW), i.e., between about 150 and 1400 m depth, and in the deep water (assumed invariable over time). In these shallower water layers, we observe significant above-zero time trends for DIC, in the range of 0.6-0.9 μmol kg -1 yr -1 (for AAW) and 0.4-0.6 μmol kg -1 yr -1 (for uPDW). No time trend in nutrients could be observed, indicating no change in the rate of organic matter mineralization within this depth range. Consequently, the buildup of DIC is attributed to increasing concentrations of anthropogenic carbon in the waters flowing into these depth layers of the Arctic Ocean. The resulting rate of increase of the column inventory of anthropogenic CO 2 is estimated to be between 0.6 and 0.9 mol C m -2 yr -1 , with distinct differences between basins. |
format |
Article in Journal/Newspaper |
author |
Ericson, Ylva Ulfsbo, Adam Van Heuven, Steven Kattner, Gerhard Anderson, Leif G. |
author_facet |
Ericson, Ylva Ulfsbo, Adam Van Heuven, Steven Kattner, Gerhard Anderson, Leif G. |
author_sort |
Ericson, Ylva |
title |
Increasing carbon inventory of the intermediate layers of the Arctic Ocean |
title_short |
Increasing carbon inventory of the intermediate layers of the Arctic Ocean |
title_full |
Increasing carbon inventory of the intermediate layers of the Arctic Ocean |
title_fullStr |
Increasing carbon inventory of the intermediate layers of the Arctic Ocean |
title_full_unstemmed |
Increasing carbon inventory of the intermediate layers of the Arctic Ocean |
title_sort |
increasing carbon inventory of the intermediate layers of the arctic ocean |
publishDate |
2014 |
url |
https://hdl.handle.net/11370/96af509b-fa6b-48f9-9b97-5b42a4760933 https://research.rug.nl/en/publications/96af509b-fa6b-48f9-9b97-5b42a4760933 https://doi.org/10.1002/2013JC009514 https://pure.rug.nl/ws/files/999193284/JGR_Oceans_-_2014_-_Ericson_-_Increasing_carbon_inventory_of_the_intermediate_layers_of_the_Arctic_Ocean.pdf http://www.scopus.com/inward/record.url?scp=84900563531&partnerID=8YFLogxK |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Ericson , Y , Ulfsbo , A , Van Heuven , S , Kattner , G & Anderson , L G 2014 , ' Increasing carbon inventory of the intermediate layers of the Arctic Ocean ' , Journal of geophysical research: Oceans , vol. 119 , no. 4 , pp. 2312-2326 . https://doi.org/10.1002/2013JC009514 |
op_relation |
https://research.rug.nl/en/publications/96af509b-fa6b-48f9-9b97-5b42a4760933 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2013JC009514 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
4 |
container_start_page |
2312 |
op_container_end_page |
2326 |
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1810292546091352064 |