Sources of dissolved inorganic carbon to the Canada Basin halocline : a multitracer study
Author Posting. © American Geophysical Union, 2016. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 121 (2016): 2918–2936, doi:10.1002/2015JC011535. We ex...
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Online Access: | https://hdl.handle.net/1912/8472 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/8472 2023-05-15T15:10:55+02:00 Sources of dissolved inorganic carbon to the Canada Basin halocline : a multitracer study Brown, Kristina A. McLaughlin, Fiona A. Tortell, Philippe D. Yamamoto-Kawai, Michiyo Francois, Roger 2016-05-04 https://hdl.handle.net/1912/8472 en eng John Wiley & Sons https://doi.org/10.1002/2015JC011535 Journal of Geophysical Research: Oceans 121 (2016): 2918–2936 https://hdl.handle.net/1912/8472 doi:10.1002/2015JC011535 Journal of Geophysical Research: Oceans 121 (2016): 2918–2936 doi:10.1002/2015JC011535 Arctic Ocean Dissolved inorganic carbon Nutrients Stable isotopes Shelf-basin CO2 pump Article 2016 ftwhoas https://doi.org/10.1002/2015JC011535 2022-05-28T22:59:45Z Author Posting. © American Geophysical Union, 2016. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 121 (2016): 2918–2936, doi:10.1002/2015JC011535. We examine the dissolved inorganic carbon maximum in the Canada Basin halocline using a suite of geochemical tracers to gain insight into the factors that contribute to the persistence of this feature. Hydrographic and geochemical samples were collected in the upper 500 m of the southwestern Canada Basin water column in the summer of 2008 and fall of 2009. These observations were used to identify conservative and nonconservative processes that contribute dissolved inorganic carbon to halocline source waters, including shelf sediment organic matter remineralization, air-sea gas exchange, and sea-ice brine export. Our results indicate that the remineralization of organic matter that occurs along the Bering and Chukchi Sea shelves is the overwhelming contributor of dissolved inorganic carbon to Pacific Winter Water that occupies the middle halocline in the southwestern Canada Basin. Nonconservative contributions from air-sea exchange and sea-ice brine are not significant. The broad salinity range associated with the DIC maximum, compared to the narrow salinity range of the nutrient maximum, is due to mixing between Pacific and Atlantic water and not abiotic addition of DIC. NSERC; Fisheries and Oceans Canada; US National Science Foundation Office of Polar Programs Grant Number: OPP-0424864; Canadian International Polar Year Office 2016-11-04 Article in Journal/Newspaper Arctic Arctic Ocean canada basin Chukchi Chukchi Sea International Polar Year National Science Foundation Office of Polar Programs Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Arctic Ocean Chukchi Sea Canada Pacific Journal of Geophysical Research: Oceans 121 5 2918 2936 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Arctic Ocean Dissolved inorganic carbon Nutrients Stable isotopes Shelf-basin CO2 pump |
spellingShingle |
Arctic Ocean Dissolved inorganic carbon Nutrients Stable isotopes Shelf-basin CO2 pump Brown, Kristina A. McLaughlin, Fiona A. Tortell, Philippe D. Yamamoto-Kawai, Michiyo Francois, Roger Sources of dissolved inorganic carbon to the Canada Basin halocline : a multitracer study |
topic_facet |
Arctic Ocean Dissolved inorganic carbon Nutrients Stable isotopes Shelf-basin CO2 pump |
description |
Author Posting. © American Geophysical Union, 2016. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 121 (2016): 2918–2936, doi:10.1002/2015JC011535. We examine the dissolved inorganic carbon maximum in the Canada Basin halocline using a suite of geochemical tracers to gain insight into the factors that contribute to the persistence of this feature. Hydrographic and geochemical samples were collected in the upper 500 m of the southwestern Canada Basin water column in the summer of 2008 and fall of 2009. These observations were used to identify conservative and nonconservative processes that contribute dissolved inorganic carbon to halocline source waters, including shelf sediment organic matter remineralization, air-sea gas exchange, and sea-ice brine export. Our results indicate that the remineralization of organic matter that occurs along the Bering and Chukchi Sea shelves is the overwhelming contributor of dissolved inorganic carbon to Pacific Winter Water that occupies the middle halocline in the southwestern Canada Basin. Nonconservative contributions from air-sea exchange and sea-ice brine are not significant. The broad salinity range associated with the DIC maximum, compared to the narrow salinity range of the nutrient maximum, is due to mixing between Pacific and Atlantic water and not abiotic addition of DIC. NSERC; Fisheries and Oceans Canada; US National Science Foundation Office of Polar Programs Grant Number: OPP-0424864; Canadian International Polar Year Office 2016-11-04 |
format |
Article in Journal/Newspaper |
author |
Brown, Kristina A. McLaughlin, Fiona A. Tortell, Philippe D. Yamamoto-Kawai, Michiyo Francois, Roger |
author_facet |
Brown, Kristina A. McLaughlin, Fiona A. Tortell, Philippe D. Yamamoto-Kawai, Michiyo Francois, Roger |
author_sort |
Brown, Kristina A. |
title |
Sources of dissolved inorganic carbon to the Canada Basin halocline : a multitracer study |
title_short |
Sources of dissolved inorganic carbon to the Canada Basin halocline : a multitracer study |
title_full |
Sources of dissolved inorganic carbon to the Canada Basin halocline : a multitracer study |
title_fullStr |
Sources of dissolved inorganic carbon to the Canada Basin halocline : a multitracer study |
title_full_unstemmed |
Sources of dissolved inorganic carbon to the Canada Basin halocline : a multitracer study |
title_sort |
sources of dissolved inorganic carbon to the canada basin halocline : a multitracer study |
publisher |
John Wiley & Sons |
publishDate |
2016 |
url |
https://hdl.handle.net/1912/8472 |
geographic |
Arctic Arctic Ocean Chukchi Sea Canada Pacific |
geographic_facet |
Arctic Arctic Ocean Chukchi Sea Canada Pacific |
genre |
Arctic Arctic Ocean canada basin Chukchi Chukchi Sea International Polar Year National Science Foundation Office of Polar Programs Sea ice |
genre_facet |
Arctic Arctic Ocean canada basin Chukchi Chukchi Sea International Polar Year National Science Foundation Office of Polar Programs Sea ice |
op_source |
Journal of Geophysical Research: Oceans 121 (2016): 2918–2936 doi:10.1002/2015JC011535 |
op_relation |
https://doi.org/10.1002/2015JC011535 Journal of Geophysical Research: Oceans 121 (2016): 2918–2936 https://hdl.handle.net/1912/8472 doi:10.1002/2015JC011535 |
op_doi |
https://doi.org/10.1002/2015JC011535 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
121 |
container_issue |
5 |
container_start_page |
2918 |
op_container_end_page |
2936 |
_version_ |
1766341852650274816 |