Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades
© The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Våge, K., Semper, S., Valdimarsson, H., Jónsson, S., Pickart, R., & Moore, G. Water mass transformation in the Iceland Sea: contrasting two wint...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Online Access: | https://hdl.handle.net/1912/29407 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/29407 2023-05-15T16:00:38+02:00 Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades Våge, Kjetil Semper, Stefanie Valdimarsson, Héðinn Jónsson, Steingrímur Pickart, Robert S. Moore, G. W. K. 2022-06-22 https://hdl.handle.net/1912/29407 unknown Elsevier https://doi.org/10.1016/j.dsr.2022.103824 Våge, K., Semper, S., Valdimarsson, H., Jónsson, S., Pickart, R., & Moore, G. (2022). Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades. Deep Sea Research Part I: Oceanographic Research Papers, 186, 103824. https://hdl.handle.net/1912/29407 doi:10.1016/j.dsr.2022.103824 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ CC-BY Våge, K., Semper, S., Valdimarsson, H., Jónsson, S., Pickart, R., & Moore, G. (2022). Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades. Deep Sea Research Part I: Oceanographic Research Papers, 186, 103824. doi:10.1016/j.dsr.2022.103824 Iceland Sea Water mass transformation North Icelandic Jet Iceland–Faroe Slope Jet East Greenland Current Denmark Strait overflow water Article 2022 ftwhoas https://doi.org/10.1016/j.dsr.2022.103824 2022-10-15T22:57:09Z © The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Våge, K., Semper, S., Valdimarsson, H., Jónsson, S., Pickart, R., & Moore, G. Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades. Deep Sea Research Part I: Oceanographic Research Papers, 186, (2022): 103824, https://doi.org/10.1016/j.dsr.2022.103824. Dense water masses formed in the Nordic Seas flow across the Greenland–Scotland Ridge and contribute substantially to the lower limb of the Atlantic Meridional Overturning Circulation. Originally considered an important source of dense water, the Iceland Sea gained renewed interest when the North Icelandic Jet — a current transporting dense water from the Iceland Sea into Denmark Strait — was discovered in the early 2000s. Here we use recent hydrographic data to quantify water mass transformation in the Iceland Sea and contrast the present conditions with measurements from hydrographic surveys conducted four decades earlier. We demonstrate that the large-scale hydrographic structure of the central Iceland Sea has changed significantly over this period and that the locally transformed water has become less dense, in concert with a retreating sea-ice edge and diminished ocean-to-atmosphere heat fluxes. This has reduced the available supply of dense water to the North Icelandic Jet, but also permitted densification of the East Greenland Current during its transit through the presently ice-free western Iceland Sea in winter. Together, these changes have significantly altered the contribution from the Iceland Sea to the overturning in the Nordic Seas over the four decade period. Support for this work was provided by the Trond Mohn Foundation, Norway under grant BFS2016REK01 (K.V. and S.S.), the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 101022251 (S.S.), the US National Science Foundation under ... Article in Journal/Newspaper Denmark Strait East Greenland east greenland current Greenland Greenland-Scotland Ridge Iceland Nordic Seas Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Greenland Norway Våge ENVELOPE(14.851,14.851,68.922,68.922) Deep Sea Research Part I: Oceanographic Research Papers 186 103824 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
unknown |
topic |
Iceland Sea Water mass transformation North Icelandic Jet Iceland–Faroe Slope Jet East Greenland Current Denmark Strait overflow water |
spellingShingle |
Iceland Sea Water mass transformation North Icelandic Jet Iceland–Faroe Slope Jet East Greenland Current Denmark Strait overflow water Våge, Kjetil Semper, Stefanie Valdimarsson, Héðinn Jónsson, Steingrímur Pickart, Robert S. Moore, G. W. K. Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades |
topic_facet |
Iceland Sea Water mass transformation North Icelandic Jet Iceland–Faroe Slope Jet East Greenland Current Denmark Strait overflow water |
description |
© The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Våge, K., Semper, S., Valdimarsson, H., Jónsson, S., Pickart, R., & Moore, G. Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades. Deep Sea Research Part I: Oceanographic Research Papers, 186, (2022): 103824, https://doi.org/10.1016/j.dsr.2022.103824. Dense water masses formed in the Nordic Seas flow across the Greenland–Scotland Ridge and contribute substantially to the lower limb of the Atlantic Meridional Overturning Circulation. Originally considered an important source of dense water, the Iceland Sea gained renewed interest when the North Icelandic Jet — a current transporting dense water from the Iceland Sea into Denmark Strait — was discovered in the early 2000s. Here we use recent hydrographic data to quantify water mass transformation in the Iceland Sea and contrast the present conditions with measurements from hydrographic surveys conducted four decades earlier. We demonstrate that the large-scale hydrographic structure of the central Iceland Sea has changed significantly over this period and that the locally transformed water has become less dense, in concert with a retreating sea-ice edge and diminished ocean-to-atmosphere heat fluxes. This has reduced the available supply of dense water to the North Icelandic Jet, but also permitted densification of the East Greenland Current during its transit through the presently ice-free western Iceland Sea in winter. Together, these changes have significantly altered the contribution from the Iceland Sea to the overturning in the Nordic Seas over the four decade period. Support for this work was provided by the Trond Mohn Foundation, Norway under grant BFS2016REK01 (K.V. and S.S.), the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 101022251 (S.S.), the US National Science Foundation under ... |
format |
Article in Journal/Newspaper |
author |
Våge, Kjetil Semper, Stefanie Valdimarsson, Héðinn Jónsson, Steingrímur Pickart, Robert S. Moore, G. W. K. |
author_facet |
Våge, Kjetil Semper, Stefanie Valdimarsson, Héðinn Jónsson, Steingrímur Pickart, Robert S. Moore, G. W. K. |
author_sort |
Våge, Kjetil |
title |
Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades |
title_short |
Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades |
title_full |
Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades |
title_fullStr |
Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades |
title_full_unstemmed |
Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades |
title_sort |
water mass transformation in the iceland sea: contrasting two winters separated by four decades |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://hdl.handle.net/1912/29407 |
long_lat |
ENVELOPE(14.851,14.851,68.922,68.922) |
geographic |
Greenland Norway Våge |
geographic_facet |
Greenland Norway Våge |
genre |
Denmark Strait East Greenland east greenland current Greenland Greenland-Scotland Ridge Iceland Nordic Seas Sea ice |
genre_facet |
Denmark Strait East Greenland east greenland current Greenland Greenland-Scotland Ridge Iceland Nordic Seas Sea ice |
op_source |
Våge, K., Semper, S., Valdimarsson, H., Jónsson, S., Pickart, R., & Moore, G. (2022). Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades. Deep Sea Research Part I: Oceanographic Research Papers, 186, 103824. doi:10.1016/j.dsr.2022.103824 |
op_relation |
https://doi.org/10.1016/j.dsr.2022.103824 Våge, K., Semper, S., Valdimarsson, H., Jónsson, S., Pickart, R., & Moore, G. (2022). Water mass transformation in the Iceland Sea: contrasting two winters separated by four decades. Deep Sea Research Part I: Oceanographic Research Papers, 186, 103824. https://hdl.handle.net/1912/29407 doi:10.1016/j.dsr.2022.103824 |
op_rights |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.dsr.2022.103824 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
186 |
container_start_page |
103824 |
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