Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum
Source at https://doi.org/10.1038/s41467-018-06252-8 . Arctic and Antarctic polynyas are crucial sites for deep-water formation, which helps sustain global ocean circulation. During glacial times, the occurrence of polynyas proximal to expansive ice sheets in both hemispheres has been proposed to ex...
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ftunivtroemsoe:oai:munin.uit.no:10037/13878 2023-05-15T13:52:48+02:00 Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum Knies, Jochen Koseoglu, Denizcan Rise, Leif Baeten, Nicole Bellec, Valerie K Bøe, Reidulv Klug, Martin Panieri, Giuliana Jernas, Patrycja Ewa Belt, Simon T. 2018-09-27 https://hdl.handle.net/10037/13878 https://doi.org/10.1038/s41467-018-06252-8 eng eng Nature Research Nature Communications info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration// Knies, J., Koseoglu, D., Rise, L., Baeten, N., Bellec, V.K., Bøe, R., . Belt, S.T. (2018). Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum. Nature Communications, 9(3959). https://doi.org/10.1038/s41467-018-06252-8 FRIDAID 1614737 doi:10.1038/s41467-018-06252-8 2041-1723 https://hdl.handle.net/10037/13878 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Journal article Tidsskriftartikkel Peer reviewed 2018 ftunivtroemsoe https://doi.org/10.1038/s41467-018-06252-8 2021-06-25T17:56:09Z Source at https://doi.org/10.1038/s41467-018-06252-8 . Arctic and Antarctic polynyas are crucial sites for deep-water formation, which helps sustain global ocean circulation. During glacial times, the occurrence of polynyas proximal to expansive ice sheets in both hemispheres has been proposed to explain limited ocean ventilation and a habitat requirement for marine and higher-trophic terrestrial fauna. Nonetheless, their existence remains equivocal, not least due to the hitherto paucity of sufficiently characteristic proxy data. Here we demonstrate polynya formation in front of the NW Eurasian ice sheets during the Last Glacial Maximum (LGM), which resulted from katabatic winds blowing seaward of the ice shelves and upwelling of warm, sub-surface Atlantic water. These polynyas sustained ice-sheet build-up, ocean ventilation, and marine productivity in an otherwise glacial Arctic desert. Following the catastrophic meltwater discharge from the collapsing ice sheets at ~17.5 ka BP, polynya formation ceased, marine productivity declined dramatically, and sea ice expanded rapidly to cover the entire Nordic Seas. Article in Journal/Newspaper Antarc* Antarctic Arctic Arctic Ice Sheet Ice Shelves Nordic Seas Sea ice University of Tromsø: Munin Open Research Archive Antarctic Arctic Nature Communications 9 1 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 |
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VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 Knies, Jochen Koseoglu, Denizcan Rise, Leif Baeten, Nicole Bellec, Valerie K Bøe, Reidulv Klug, Martin Panieri, Giuliana Jernas, Patrycja Ewa Belt, Simon T. Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 |
description |
Source at https://doi.org/10.1038/s41467-018-06252-8 . Arctic and Antarctic polynyas are crucial sites for deep-water formation, which helps sustain global ocean circulation. During glacial times, the occurrence of polynyas proximal to expansive ice sheets in both hemispheres has been proposed to explain limited ocean ventilation and a habitat requirement for marine and higher-trophic terrestrial fauna. Nonetheless, their existence remains equivocal, not least due to the hitherto paucity of sufficiently characteristic proxy data. Here we demonstrate polynya formation in front of the NW Eurasian ice sheets during the Last Glacial Maximum (LGM), which resulted from katabatic winds blowing seaward of the ice shelves and upwelling of warm, sub-surface Atlantic water. These polynyas sustained ice-sheet build-up, ocean ventilation, and marine productivity in an otherwise glacial Arctic desert. Following the catastrophic meltwater discharge from the collapsing ice sheets at ~17.5 ka BP, polynya formation ceased, marine productivity declined dramatically, and sea ice expanded rapidly to cover the entire Nordic Seas. |
format |
Article in Journal/Newspaper |
author |
Knies, Jochen Koseoglu, Denizcan Rise, Leif Baeten, Nicole Bellec, Valerie K Bøe, Reidulv Klug, Martin Panieri, Giuliana Jernas, Patrycja Ewa Belt, Simon T. |
author_facet |
Knies, Jochen Koseoglu, Denizcan Rise, Leif Baeten, Nicole Bellec, Valerie K Bøe, Reidulv Klug, Martin Panieri, Giuliana Jernas, Patrycja Ewa Belt, Simon T. |
author_sort |
Knies, Jochen |
title |
Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum |
title_short |
Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum |
title_full |
Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum |
title_fullStr |
Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum |
title_full_unstemmed |
Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum |
title_sort |
nordic seas polynyas and their role in preconditioning marine productivity during the last glacial maximum |
publisher |
Nature Research |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/13878 https://doi.org/10.1038/s41467-018-06252-8 |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
Antarc* Antarctic Arctic Arctic Ice Sheet Ice Shelves Nordic Seas Sea ice |
genre_facet |
Antarc* Antarctic Arctic Arctic Ice Sheet Ice Shelves Nordic Seas Sea ice |
op_relation |
Nature Communications info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration// Knies, J., Koseoglu, D., Rise, L., Baeten, N., Bellec, V.K., Bøe, R., . Belt, S.T. (2018). Nordic Seas polynyas and their role in preconditioning marine productivity during the Last Glacial Maximum. Nature Communications, 9(3959). https://doi.org/10.1038/s41467-018-06252-8 FRIDAID 1614737 doi:10.1038/s41467-018-06252-8 2041-1723 https://hdl.handle.net/10037/13878 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1038/s41467-018-06252-8 |
container_title |
Nature Communications |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766257554502975488 |