Atlantic inflow and low sea-ice cover in the Nordic Seas promoted Fennoscandian Ice Sheet growth during the Last Glacial Maximum
Abstract The Atlantic water inflow into the Nordic Seas has proven difficult to reconstruct for the Last Glacial Maximum. At that time, the Fennoscandian Ice Sheet grew potentially to its maximum extent. Sea-ice free conditions in the eastern Nordic Seas have been proposed as an essential moisture s...
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ftdoajarticles:oai:doaj.org/article:97fd5261159f4c26b8753fbcaebd7d73 2023-11-12T04:17:03+01:00 Atlantic inflow and low sea-ice cover in the Nordic Seas promoted Fennoscandian Ice Sheet growth during the Last Glacial Maximum Margit H. Simon Sunniva Rutledal Laurie Menviel Tobias Zolles Haflidi Haflidason Andreas Born Sarah M. P. Berben Trond M. Dokken 2023-10-01T00:00:00Z https://doi.org/10.1038/s43247-023-01032-9 https://doaj.org/article/97fd5261159f4c26b8753fbcaebd7d73 EN eng Nature Portfolio https://doi.org/10.1038/s43247-023-01032-9 https://doaj.org/toc/2662-4435 doi:10.1038/s43247-023-01032-9 2662-4435 https://doaj.org/article/97fd5261159f4c26b8753fbcaebd7d73 Communications Earth & Environment, Vol 4, Iss 1, Pp 1-11 (2023) Geology QE1-996.5 Environmental sciences GE1-350 article 2023 ftdoajarticles https://doi.org/10.1038/s43247-023-01032-9 2023-10-29T00:41:53Z Abstract The Atlantic water inflow into the Nordic Seas has proven difficult to reconstruct for the Last Glacial Maximum. At that time, the Fennoscandian Ice Sheet grew potentially to its maximum extent. Sea-ice free conditions in the eastern Nordic Seas have been proposed as an essential moisture source contributing to this build-up. It has been hypothesized that the inflow of warm and saline Atlantic surface waters was important for maintaining these seasonally sea-ice free conditions in the Nordic Seas at that time. However, the difference between a perennially frozen ocean and a seasonally open ocean on ice sheet build-up remains unquantified. Here we use, tephra-constrained surface ventilation ages from a network of marine sediment cores and model experiments, to show that Atlantic inflow to the southern Nordic Seas likely occurred predominately via the Iceland-Faroe Atlantic inflow pathway helping to maintain seasonal open waters at the onset of the Last Glacial Maximum. Using a numerical snow model, we further demonstrate that such open-ocean conditions may have been a factor contributing to the Fennoscandian Ice Sheet growth with up to ~150% increase in surface mass balance over Norwegian coastal areas, compared to sea-ice covered conditions. Article in Journal/Newspaper Fennoscandian Ice Sheet Iceland Nordic Seas Sea ice Directory of Open Access Journals: DOAJ Articles Communications Earth & Environment 4 1 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 Environmental sciences GE1-350 |
spellingShingle |
Geology QE1-996.5 Environmental sciences GE1-350 Margit H. Simon Sunniva Rutledal Laurie Menviel Tobias Zolles Haflidi Haflidason Andreas Born Sarah M. P. Berben Trond M. Dokken Atlantic inflow and low sea-ice cover in the Nordic Seas promoted Fennoscandian Ice Sheet growth during the Last Glacial Maximum |
topic_facet |
Geology QE1-996.5 Environmental sciences GE1-350 |
description |
Abstract The Atlantic water inflow into the Nordic Seas has proven difficult to reconstruct for the Last Glacial Maximum. At that time, the Fennoscandian Ice Sheet grew potentially to its maximum extent. Sea-ice free conditions in the eastern Nordic Seas have been proposed as an essential moisture source contributing to this build-up. It has been hypothesized that the inflow of warm and saline Atlantic surface waters was important for maintaining these seasonally sea-ice free conditions in the Nordic Seas at that time. However, the difference between a perennially frozen ocean and a seasonally open ocean on ice sheet build-up remains unquantified. Here we use, tephra-constrained surface ventilation ages from a network of marine sediment cores and model experiments, to show that Atlantic inflow to the southern Nordic Seas likely occurred predominately via the Iceland-Faroe Atlantic inflow pathway helping to maintain seasonal open waters at the onset of the Last Glacial Maximum. Using a numerical snow model, we further demonstrate that such open-ocean conditions may have been a factor contributing to the Fennoscandian Ice Sheet growth with up to ~150% increase in surface mass balance over Norwegian coastal areas, compared to sea-ice covered conditions. |
format |
Article in Journal/Newspaper |
author |
Margit H. Simon Sunniva Rutledal Laurie Menviel Tobias Zolles Haflidi Haflidason Andreas Born Sarah M. P. Berben Trond M. Dokken |
author_facet |
Margit H. Simon Sunniva Rutledal Laurie Menviel Tobias Zolles Haflidi Haflidason Andreas Born Sarah M. P. Berben Trond M. Dokken |
author_sort |
Margit H. Simon |
title |
Atlantic inflow and low sea-ice cover in the Nordic Seas promoted Fennoscandian Ice Sheet growth during the Last Glacial Maximum |
title_short |
Atlantic inflow and low sea-ice cover in the Nordic Seas promoted Fennoscandian Ice Sheet growth during the Last Glacial Maximum |
title_full |
Atlantic inflow and low sea-ice cover in the Nordic Seas promoted Fennoscandian Ice Sheet growth during the Last Glacial Maximum |
title_fullStr |
Atlantic inflow and low sea-ice cover in the Nordic Seas promoted Fennoscandian Ice Sheet growth during the Last Glacial Maximum |
title_full_unstemmed |
Atlantic inflow and low sea-ice cover in the Nordic Seas promoted Fennoscandian Ice Sheet growth during the Last Glacial Maximum |
title_sort |
atlantic inflow and low sea-ice cover in the nordic seas promoted fennoscandian ice sheet growth during the last glacial maximum |
publisher |
Nature Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s43247-023-01032-9 https://doaj.org/article/97fd5261159f4c26b8753fbcaebd7d73 |
genre |
Fennoscandian Ice Sheet Iceland Nordic Seas Sea ice |
genre_facet |
Fennoscandian Ice Sheet Iceland Nordic Seas Sea ice |
op_source |
Communications Earth & Environment, Vol 4, Iss 1, Pp 1-11 (2023) |
op_relation |
https://doi.org/10.1038/s43247-023-01032-9 https://doaj.org/toc/2662-4435 doi:10.1038/s43247-023-01032-9 2662-4435 https://doaj.org/article/97fd5261159f4c26b8753fbcaebd7d73 |
op_doi |
https://doi.org/10.1038/s43247-023-01032-9 |
container_title |
Communications Earth & Environment |
container_volume |
4 |
container_issue |
1 |
_version_ |
1782334047365627904 |