Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean
Arctic sea-ice loss is a leading indicator of climate change and can be attributed, in large part, to atmospheric forcing. Here, we show that recent ice reductions, weakening of the halocline, and shoaling of intermediate-depth Atlantic Water layer in the eastern Eurasian Basin have increased winter...
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American Association for the Advancement of Science (AAAS)
2017
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Online Access: | https://oceanrep.geomar.de/id/eprint/41173/ https://oceanrep.geomar.de/id/eprint/41173/1/Polyakov.pdf https://doi.org/10.1126/science.aai8204 |
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ftoceanrep:oai:oceanrep.geomar.de:41173 2023-05-15T14:27:33+02:00 Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean Polyakov, Igor V. Pnyushkov, Andrey V. Alkire, Matthew B. Ashik, Igor M. Baumann, Till M. Carmack, Eddy C. Goszczko, Ilona Guthrie, John Ivanov, Vladimir V. Kanzow, Torsten Krishfield, Richard Kwok, Ronald Sundfjord, Arild Morison, James Rember, Robert Yulin, Alexander 2017 text https://oceanrep.geomar.de/id/eprint/41173/ https://oceanrep.geomar.de/id/eprint/41173/1/Polyakov.pdf https://doi.org/10.1126/science.aai8204 en eng American Association for the Advancement of Science (AAAS) https://oceanrep.geomar.de/id/eprint/41173/1/Polyakov.pdf Polyakov, I. V., Pnyushkov, A. V., Alkire, M. B., Ashik, I. M., Baumann, T. M., Carmack, E. C., Goszczko, I., Guthrie, J., Ivanov, V. V., Kanzow, T., Krishfield, R., Kwok, R., Sundfjord, A., Morison, J., Rember, R. and Yulin, A. (2017) Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean. Science, 356 (6335). pp. 285-291. DOI 10.1126/science.aai8204 <https://doi.org/10.1126/science.aai8204>. doi:10.1126/science.aai8204 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2017 ftoceanrep https://doi.org/10.1126/science.aai8204 2023-04-07T15:37:32Z Arctic sea-ice loss is a leading indicator of climate change and can be attributed, in large part, to atmospheric forcing. Here, we show that recent ice reductions, weakening of the halocline, and shoaling of intermediate-depth Atlantic Water layer in the eastern Eurasian Basin have increased winter ventilation in the ocean interior, making this region structurally similar to that of the western Eurasian Basin. The associated enhanced release of oceanic heat has reduced winter sea-ice formation at a rate now comparable to losses from atmospheric thermodynamic forcing, thus explaining the recent reduction in sea-ice cover in the eastern Eurasian Basin. This encroaching “atlantification” of the Eurasian Basin represents an essential step toward a new Arctic climate state, with a substantially greater role for Atlantic inflows. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Climate change Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Science 356 6335 285 291 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Arctic sea-ice loss is a leading indicator of climate change and can be attributed, in large part, to atmospheric forcing. Here, we show that recent ice reductions, weakening of the halocline, and shoaling of intermediate-depth Atlantic Water layer in the eastern Eurasian Basin have increased winter ventilation in the ocean interior, making this region structurally similar to that of the western Eurasian Basin. The associated enhanced release of oceanic heat has reduced winter sea-ice formation at a rate now comparable to losses from atmospheric thermodynamic forcing, thus explaining the recent reduction in sea-ice cover in the eastern Eurasian Basin. This encroaching “atlantification” of the Eurasian Basin represents an essential step toward a new Arctic climate state, with a substantially greater role for Atlantic inflows. |
format |
Article in Journal/Newspaper |
author |
Polyakov, Igor V. Pnyushkov, Andrey V. Alkire, Matthew B. Ashik, Igor M. Baumann, Till M. Carmack, Eddy C. Goszczko, Ilona Guthrie, John Ivanov, Vladimir V. Kanzow, Torsten Krishfield, Richard Kwok, Ronald Sundfjord, Arild Morison, James Rember, Robert Yulin, Alexander |
spellingShingle |
Polyakov, Igor V. Pnyushkov, Andrey V. Alkire, Matthew B. Ashik, Igor M. Baumann, Till M. Carmack, Eddy C. Goszczko, Ilona Guthrie, John Ivanov, Vladimir V. Kanzow, Torsten Krishfield, Richard Kwok, Ronald Sundfjord, Arild Morison, James Rember, Robert Yulin, Alexander Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean |
author_facet |
Polyakov, Igor V. Pnyushkov, Andrey V. Alkire, Matthew B. Ashik, Igor M. Baumann, Till M. Carmack, Eddy C. Goszczko, Ilona Guthrie, John Ivanov, Vladimir V. Kanzow, Torsten Krishfield, Richard Kwok, Ronald Sundfjord, Arild Morison, James Rember, Robert Yulin, Alexander |
author_sort |
Polyakov, Igor V. |
title |
Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean |
title_short |
Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean |
title_full |
Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean |
title_fullStr |
Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean |
title_full_unstemmed |
Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean |
title_sort |
greater role for atlantic inflows on sea-ice loss in the eurasian basin of the arctic ocean |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2017 |
url |
https://oceanrep.geomar.de/id/eprint/41173/ https://oceanrep.geomar.de/id/eprint/41173/1/Polyakov.pdf https://doi.org/10.1126/science.aai8204 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Climate change Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Climate change Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/41173/1/Polyakov.pdf Polyakov, I. V., Pnyushkov, A. V., Alkire, M. B., Ashik, I. M., Baumann, T. M., Carmack, E. C., Goszczko, I., Guthrie, J., Ivanov, V. V., Kanzow, T., Krishfield, R., Kwok, R., Sundfjord, A., Morison, J., Rember, R. and Yulin, A. (2017) Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean. Science, 356 (6335). pp. 285-291. DOI 10.1126/science.aai8204 <https://doi.org/10.1126/science.aai8204>. doi:10.1126/science.aai8204 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1126/science.aai8204 |
container_title |
Science |
container_volume |
356 |
container_issue |
6335 |
container_start_page |
285 |
op_container_end_page |
291 |
_version_ |
1766301346559950848 |