Rapid Changes in Anthropogenic Carbon Storage and Ocean Acidification in the Intermediate Layers of the Eurasian Arctic Ocean: 1996-2015
The extended multiple linear regression technique is used to determine changes in anthropogenic carbon in the intermediate layers of the Eurasian Basin based on occupations from four cruises between 1996 and 2015. The results show a significant increase in basin‐wide anthropogenic carbon storage in...
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American Geophysical Union
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/302364 2023-05-15T13:22:41+02:00 Rapid Changes in Anthropogenic Carbon Storage and Ocean Acidification in the Intermediate Layers of the Eurasian Arctic Ocean: 1996-2015 Ulfsbo, Adam Jones, Elizabeth M. Casacuberta, Núria Korhonen, Meri Rabe, Benjamin Karcher, Michael Van Heuven, Steven M.A.C. 2018-09 application/application/pdf https://hdl.handle.net/20.500.11850/302364 https://doi.org/10.3929/ethz-b-000302364 en eng American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2017GB005738 info:eu-repo/semantics/altIdentifier/wos/000447281100001 info:eu-repo/grantAgreement/SNF/Ambizione/154805 http://hdl.handle.net/20.500.11850/302364 doi:10.3929/ethz-b-000302364 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International CC-BY-NC-ND Global Biogeochemical Cycles, 32 (9) ocean acidification Arctic Ocean anthropogenic carbon Eurasian Basin Nansen Basin Amundsen Basin info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftethz https://doi.org/20.500.11850/302364 https://doi.org/10.3929/ethz-b-000302364 https://doi.org/10.1029/2017GB005738 2023-02-20T00:39:33Z The extended multiple linear regression technique is used to determine changes in anthropogenic carbon in the intermediate layers of the Eurasian Basin based on occupations from four cruises between 1996 and 2015. The results show a significant increase in basin‐wide anthropogenic carbon storage in the Nansen Basin (0.44–0.73 ± 0.14 mol C·m−2·year−1) and the Amundsen Basin (0.63–1.04 ± 0.09 mol C·m−2·year−1). Over the last two decades, inferred changes in ocean acidification (0.020–0.055 pH units) and calcium carbonate desaturation (0.05–0.18 units) are pronounced and rapid. These results, together with results from carbonate‐dynamic box model simulations and 129I tracer distribution simulations, suggest that the accumulation of anthropogenic carbon in the intermediate layers of the Eurasian Basin are consistent with increasing concentrations of anthropogenic carbon in source waters of Atlantic origin entering the Arctic Ocean followed by interior transport. The dissimilar distributions of anthropogenic carbon in the interior Nansen and Amundsen Basins are likely due to differences in the lateral ventilation of the intermediate layers by the return flows and ramifications of the boundary current along the topographic boundaries in the Eurasian Basin. ISSN:0886-6236 ISSN:1944-9224 Article in Journal/Newspaper amundsen basin Arctic Arctic Ocean Nansen Basin Ocean acidification ETH Zürich Research Collection Amundsen Basin ENVELOPE(74.000,74.000,87.000,87.000) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
topic |
ocean acidification Arctic Ocean anthropogenic carbon Eurasian Basin Nansen Basin Amundsen Basin |
spellingShingle |
ocean acidification Arctic Ocean anthropogenic carbon Eurasian Basin Nansen Basin Amundsen Basin Ulfsbo, Adam Jones, Elizabeth M. Casacuberta, Núria Korhonen, Meri Rabe, Benjamin Karcher, Michael Van Heuven, Steven M.A.C. Rapid Changes in Anthropogenic Carbon Storage and Ocean Acidification in the Intermediate Layers of the Eurasian Arctic Ocean: 1996-2015 |
topic_facet |
ocean acidification Arctic Ocean anthropogenic carbon Eurasian Basin Nansen Basin Amundsen Basin |
description |
The extended multiple linear regression technique is used to determine changes in anthropogenic carbon in the intermediate layers of the Eurasian Basin based on occupations from four cruises between 1996 and 2015. The results show a significant increase in basin‐wide anthropogenic carbon storage in the Nansen Basin (0.44–0.73 ± 0.14 mol C·m−2·year−1) and the Amundsen Basin (0.63–1.04 ± 0.09 mol C·m−2·year−1). Over the last two decades, inferred changes in ocean acidification (0.020–0.055 pH units) and calcium carbonate desaturation (0.05–0.18 units) are pronounced and rapid. These results, together with results from carbonate‐dynamic box model simulations and 129I tracer distribution simulations, suggest that the accumulation of anthropogenic carbon in the intermediate layers of the Eurasian Basin are consistent with increasing concentrations of anthropogenic carbon in source waters of Atlantic origin entering the Arctic Ocean followed by interior transport. The dissimilar distributions of anthropogenic carbon in the interior Nansen and Amundsen Basins are likely due to differences in the lateral ventilation of the intermediate layers by the return flows and ramifications of the boundary current along the topographic boundaries in the Eurasian Basin. ISSN:0886-6236 ISSN:1944-9224 |
format |
Article in Journal/Newspaper |
author |
Ulfsbo, Adam Jones, Elizabeth M. Casacuberta, Núria Korhonen, Meri Rabe, Benjamin Karcher, Michael Van Heuven, Steven M.A.C. |
author_facet |
Ulfsbo, Adam Jones, Elizabeth M. Casacuberta, Núria Korhonen, Meri Rabe, Benjamin Karcher, Michael Van Heuven, Steven M.A.C. |
author_sort |
Ulfsbo, Adam |
title |
Rapid Changes in Anthropogenic Carbon Storage and Ocean Acidification in the Intermediate Layers of the Eurasian Arctic Ocean: 1996-2015 |
title_short |
Rapid Changes in Anthropogenic Carbon Storage and Ocean Acidification in the Intermediate Layers of the Eurasian Arctic Ocean: 1996-2015 |
title_full |
Rapid Changes in Anthropogenic Carbon Storage and Ocean Acidification in the Intermediate Layers of the Eurasian Arctic Ocean: 1996-2015 |
title_fullStr |
Rapid Changes in Anthropogenic Carbon Storage and Ocean Acidification in the Intermediate Layers of the Eurasian Arctic Ocean: 1996-2015 |
title_full_unstemmed |
Rapid Changes in Anthropogenic Carbon Storage and Ocean Acidification in the Intermediate Layers of the Eurasian Arctic Ocean: 1996-2015 |
title_sort |
rapid changes in anthropogenic carbon storage and ocean acidification in the intermediate layers of the eurasian arctic ocean: 1996-2015 |
publisher |
American Geophysical Union |
publishDate |
2018 |
url |
https://hdl.handle.net/20.500.11850/302364 https://doi.org/10.3929/ethz-b-000302364 |
long_lat |
ENVELOPE(74.000,74.000,87.000,87.000) |
geographic |
Amundsen Basin Arctic Arctic Ocean |
geographic_facet |
Amundsen Basin Arctic Arctic Ocean |
genre |
amundsen basin Arctic Arctic Ocean Nansen Basin Ocean acidification |
genre_facet |
amundsen basin Arctic Arctic Ocean Nansen Basin Ocean acidification |
op_source |
Global Biogeochemical Cycles, 32 (9) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2017GB005738 info:eu-repo/semantics/altIdentifier/wos/000447281100001 info:eu-repo/grantAgreement/SNF/Ambizione/154805 http://hdl.handle.net/20.500.11850/302364 doi:10.3929/ethz-b-000302364 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/20.500.11850/302364 https://doi.org/10.3929/ethz-b-000302364 https://doi.org/10.1029/2017GB005738 |
_version_ |
1766366235966046208 |