Continued warming of deep waters in the Fram Strait
The Fram Strait is the only deep gateway between the Arctic and the rest of the World Ocean, and it is thus a key region to understand how the deep Arctic will evolve. However, studies and data regarding the deep ocean are scarce, making it difficult to understand its role in the climate system. Her...
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ftdoajarticles:oai:doaj.org/article:d8aab5033d974ab29bd62a49d38bbaf3 2024-09-15T17:54:00+00:00 Continued warming of deep waters in the Fram Strait S. Karam C. Heuzé M. Hoppmann L. de Steur 2024-07-01T00:00:00Z https://doi.org/10.5194/os-20-917-2024 https://doaj.org/article/d8aab5033d974ab29bd62a49d38bbaf3 EN eng Copernicus Publications https://os.copernicus.org/articles/20/917/2024/os-20-917-2024.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-20-917-2024 1812-0784 1812-0792 https://doaj.org/article/d8aab5033d974ab29bd62a49d38bbaf3 Ocean Science, Vol 20, Pp 917-930 (2024) Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2024 ftdoajarticles https://doi.org/10.5194/os-20-917-2024 2024-08-05T17:48:54Z The Fram Strait is the only deep gateway between the Arctic and the rest of the World Ocean, and it is thus a key region to understand how the deep Arctic will evolve. However, studies and data regarding the deep ocean are scarce, making it difficult to understand its role in the climate system. Here, we analyse oceanographic data obtained close to the Fram Strait sill depth of 2500 m by two long-term mooring locations (F11 and HG-FEVI) in the Fram Strait between 2010–2023 to investigate long-term changes in the hydrographic properties. For additional context, we compile hydrographic profile data from the 1980s for the adjacent basins: the Greenland Sea and the Eurasian Basin. At mooring F11 in the western Fram Strait, we find a clear seasonality, with increased Greenland Sea Deep Water (GSDW) presence during summer and increased Eurasian Basin Deep Water (EBDW) presence during winter. Evaluating long-term changes, we find a modest temperature increase of ∼ 0.1 °C for EBDW from the 1980s. For GSDW, south of the Fram Strait, we find a strong temperature increase of ∼ 0.4–0.5 °C for the same period. The different warming rates have led to GSDW becoming warmer than EBDW since ∼ 2017–2018. This means that the Greenland Sea is no longer a heat sink for the Arctic Ocean at depth but is rather a heat source. It is therefore possible that EBDW temperatures will increase faster in the future. Article in Journal/Newspaper Arctic Ocean Fram Strait Greenland Greenland Sea Directory of Open Access Journals: DOAJ Articles Ocean Science 20 4 917 930 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 S. Karam C. Heuzé M. Hoppmann L. de Steur Continued warming of deep waters in the Fram Strait |
topic_facet |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
description |
The Fram Strait is the only deep gateway between the Arctic and the rest of the World Ocean, and it is thus a key region to understand how the deep Arctic will evolve. However, studies and data regarding the deep ocean are scarce, making it difficult to understand its role in the climate system. Here, we analyse oceanographic data obtained close to the Fram Strait sill depth of 2500 m by two long-term mooring locations (F11 and HG-FEVI) in the Fram Strait between 2010–2023 to investigate long-term changes in the hydrographic properties. For additional context, we compile hydrographic profile data from the 1980s for the adjacent basins: the Greenland Sea and the Eurasian Basin. At mooring F11 in the western Fram Strait, we find a clear seasonality, with increased Greenland Sea Deep Water (GSDW) presence during summer and increased Eurasian Basin Deep Water (EBDW) presence during winter. Evaluating long-term changes, we find a modest temperature increase of ∼ 0.1 °C for EBDW from the 1980s. For GSDW, south of the Fram Strait, we find a strong temperature increase of ∼ 0.4–0.5 °C for the same period. The different warming rates have led to GSDW becoming warmer than EBDW since ∼ 2017–2018. This means that the Greenland Sea is no longer a heat sink for the Arctic Ocean at depth but is rather a heat source. It is therefore possible that EBDW temperatures will increase faster in the future. |
format |
Article in Journal/Newspaper |
author |
S. Karam C. Heuzé M. Hoppmann L. de Steur |
author_facet |
S. Karam C. Heuzé M. Hoppmann L. de Steur |
author_sort |
S. Karam |
title |
Continued warming of deep waters in the Fram Strait |
title_short |
Continued warming of deep waters in the Fram Strait |
title_full |
Continued warming of deep waters in the Fram Strait |
title_fullStr |
Continued warming of deep waters in the Fram Strait |
title_full_unstemmed |
Continued warming of deep waters in the Fram Strait |
title_sort |
continued warming of deep waters in the fram strait |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/os-20-917-2024 https://doaj.org/article/d8aab5033d974ab29bd62a49d38bbaf3 |
genre |
Arctic Ocean Fram Strait Greenland Greenland Sea |
genre_facet |
Arctic Ocean Fram Strait Greenland Greenland Sea |
op_source |
Ocean Science, Vol 20, Pp 917-930 (2024) |
op_relation |
https://os.copernicus.org/articles/20/917/2024/os-20-917-2024.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-20-917-2024 1812-0784 1812-0792 https://doaj.org/article/d8aab5033d974ab29bd62a49d38bbaf3 |
op_doi |
https://doi.org/10.5194/os-20-917-2024 |
container_title |
Ocean Science |
container_volume |
20 |
container_issue |
4 |
container_start_page |
917 |
op_container_end_page |
930 |
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1810430159225880576 |