Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover
Less than three decades ago only a small fraction of the Arctic Ocean (AO) was ice free and then only for short periods. The ice cover kept sea surface pCO(2) at levels lower relative to other ocean basins that have been exposed year round to ever increasing atmospheric levels. In this study, we eva...
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ftpubmed:oai:pubmedcentral.nih.gov:7380310 2023-05-15T14:54:05+02:00 Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover DeGrandpre, Michael Evans, Wiley Timmermans, Mary‐Louise Krishfield, Richard Williams, Bill Steele, Michael 2020-06-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7380310/ http://www.ncbi.nlm.nih.gov/pubmed/32728302 https://doi.org/10.1029/2020GL088051 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7380310/ http://www.ncbi.nlm.nih.gov/pubmed/32728302 http://dx.doi.org/10.1029/2020GL088051 ©2020. The Authors. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Geophys Res Lett Research Letters Text 2020 ftpubmed https://doi.org/10.1029/2020GL088051 2020-08-02T00:27:47Z Less than three decades ago only a small fraction of the Arctic Ocean (AO) was ice free and then only for short periods. The ice cover kept sea surface pCO(2) at levels lower relative to other ocean basins that have been exposed year round to ever increasing atmospheric levels. In this study, we evaluate sea surface pCO(2) measurements collected over a 6‐year period along a fixed cruise track in the Canada Basin. The measurements show that mean pCO(2) levels are significantly higher during low ice years. The pCO(2) increase is likely driven by ocean surface heating and uptake of atmospheric CO(2) with large interannual variability in the contributions of these processes. These findings suggest that increased ice‐free periods will further increase sea surface pCO(2), reducing the Canada Basin's current role as a net sink of atmospheric CO(2). Text Arctic Arctic Ocean canada basin PubMed Central (PMC) Arctic Arctic Ocean Canada Geophysical Research Letters 47 12 |
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Research Letters DeGrandpre, Michael Evans, Wiley Timmermans, Mary‐Louise Krishfield, Richard Williams, Bill Steele, Michael Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover |
topic_facet |
Research Letters |
description |
Less than three decades ago only a small fraction of the Arctic Ocean (AO) was ice free and then only for short periods. The ice cover kept sea surface pCO(2) at levels lower relative to other ocean basins that have been exposed year round to ever increasing atmospheric levels. In this study, we evaluate sea surface pCO(2) measurements collected over a 6‐year period along a fixed cruise track in the Canada Basin. The measurements show that mean pCO(2) levels are significantly higher during low ice years. The pCO(2) increase is likely driven by ocean surface heating and uptake of atmospheric CO(2) with large interannual variability in the contributions of these processes. These findings suggest that increased ice‐free periods will further increase sea surface pCO(2), reducing the Canada Basin's current role as a net sink of atmospheric CO(2). |
format |
Text |
author |
DeGrandpre, Michael Evans, Wiley Timmermans, Mary‐Louise Krishfield, Richard Williams, Bill Steele, Michael |
author_facet |
DeGrandpre, Michael Evans, Wiley Timmermans, Mary‐Louise Krishfield, Richard Williams, Bill Steele, Michael |
author_sort |
DeGrandpre, Michael |
title |
Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover |
title_short |
Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover |
title_full |
Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover |
title_fullStr |
Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover |
title_full_unstemmed |
Changes in the Arctic Ocean Carbon Cycle With Diminishing Ice Cover |
title_sort |
changes in the arctic ocean carbon cycle with diminishing ice cover |
publisher |
John Wiley and Sons Inc. |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7380310/ http://www.ncbi.nlm.nih.gov/pubmed/32728302 https://doi.org/10.1029/2020GL088051 |
geographic |
Arctic Arctic Ocean Canada |
geographic_facet |
Arctic Arctic Ocean Canada |
genre |
Arctic Arctic Ocean canada basin |
genre_facet |
Arctic Arctic Ocean canada basin |
op_source |
Geophys Res Lett |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7380310/ http://www.ncbi.nlm.nih.gov/pubmed/32728302 http://dx.doi.org/10.1029/2020GL088051 |
op_rights |
©2020. The Authors. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2020GL088051 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
12 |
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1766325776878141440 |