Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean
Author Posting. © The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Science 356 (2...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/8975 2023-05-15T14:49:20+02:00 Greater role for Atlantic inflows on sea-ice loss in the Eurasian Basin of the Arctic Ocean Polyakov, Igor V. Pnyushkov, Andrey Alkire, Matthew Ashik, Igor M. Baumann, Till M. Carmack, Eddy C. Goszczko, Ilona Guthrie, John D. Ivanov, Vladimir V. Kanzow, Torsten Krishfield, Richard A. Kwok, Ron Sundfjord, Arild Morison, James H. Rember, Robert Yulin, Alexander 2017-03 https://hdl.handle.net/1912/8975 en_US eng https://doi.org/10.1126/science.aai8204 https://hdl.handle.net/1912/8975 Preprint 2017 ftwhoas https://doi.org/10.1126/science.aai8204 2022-05-28T22:59:54Z Author Posting. © The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Science 356 (2017): 285-291, doi:10.1126/science.aai8204. 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. This study was supported by NSF grants #1203473 and #1249133 (AP, IP, MA, RR, VI), NOAA grant # NA15OAR4310155 (AP, IP, MA, RR, TB, VI) and by the A-TWAIN project, funded by the Arctic Ocean program at the FRAM-High North Research Centre for Climate and the Environment. Report Arctic Arctic Ocean Climate change Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Arctic Ocean Science 356 6335 285 291 |
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Open Polar |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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ftwhoas |
language |
English |
description |
Author Posting. © The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Science 356 (2017): 285-291, doi:10.1126/science.aai8204. 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. This study was supported by NSF grants #1203473 and #1249133 (AP, IP, MA, RR, VI), NOAA grant # NA15OAR4310155 (AP, IP, MA, RR, TB, VI) and by the A-TWAIN project, funded by the Arctic Ocean program at the FRAM-High North Research Centre for Climate and the Environment. |
format |
Report |
author |
Polyakov, Igor V. Pnyushkov, Andrey Alkire, Matthew Ashik, Igor M. Baumann, Till M. Carmack, Eddy C. Goszczko, Ilona Guthrie, John D. Ivanov, Vladimir V. Kanzow, Torsten Krishfield, Richard A. Kwok, Ron Sundfjord, Arild Morison, James H. Rember, Robert Yulin, Alexander |
spellingShingle |
Polyakov, Igor V. Pnyushkov, Andrey Alkire, Matthew Ashik, Igor M. Baumann, Till M. Carmack, Eddy C. Goszczko, Ilona Guthrie, John D. Ivanov, Vladimir V. Kanzow, Torsten Krishfield, Richard A. Kwok, Ron Sundfjord, Arild Morison, James H. 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 Alkire, Matthew Ashik, Igor M. Baumann, Till M. Carmack, Eddy C. Goszczko, Ilona Guthrie, John D. Ivanov, Vladimir V. Kanzow, Torsten Krishfield, Richard A. Kwok, Ron Sundfjord, Arild Morison, James H. 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 |
publishDate |
2017 |
url |
https://hdl.handle.net/1912/8975 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change Sea ice |
genre_facet |
Arctic Arctic Ocean Climate change Sea ice |
op_relation |
https://doi.org/10.1126/science.aai8204 https://hdl.handle.net/1912/8975 |
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_ |
1766320396237275136 |