A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period
Changes in the formation of dense water in the Arctic Ocean and Nordic Seas [the "Arctic Mediterranean" (AM)] probably contributed to the altered climate of the last glacial period. We examined past changes in AM circulation by reconstructing radiocarbon ventilation ages of the deep Nordic...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/319710 2023-07-23T04:17:00+02:00 A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period Thornalley, D.J.R. Bauch, H.A. Gebbie, G. Guo, W. Ziegler, M. Bernasconi, S.M. Barker, S. Skinner, L.C. Yu, J. Stratigraphy & paleontology Stratigraphy and paleontology 2015-08-14 application/pdf https://dspace.library.uu.nl/handle/1874/319710 en eng 0036-8075 https://dspace.library.uu.nl/handle/1874/319710 info:eu-repo/semantics/EmbargoedAccess air conditioning Arctic climate deglaciation glacial period ice sheet iceberg sea sea ice temperature carbon 14 water Article 2015 ftunivutrecht 2023-07-02T01:28:12Z Changes in the formation of dense water in the Arctic Ocean and Nordic Seas [the "Arctic Mediterranean" (AM)] probably contributed to the altered climate of the last glacial period. We examined past changes in AM circulation by reconstructing radiocarbon ventilation ages of the deep Nordic Seas over the past 30,000 years. Our results show that the glacial deep AM was extremely poorly ventilated (ventilation ages of up to 10,000 years). Subsequent episodic overflow of aged water into the mid-depth North Atlantic occurred during deglaciation. Proxy data also suggest that the deep glacial AM was ∼2° to 3°C warmer than modern temperatures; deglacial mixing of the deep AM with the upper ocean thus potentially contributed to the melting of sea ice, icebergs, and terminal ice-sheet margins. Article in Journal/Newspaper Arctic Arctic Ocean Ice Sheet Iceberg* Nordic Seas North Atlantic Sea ice Utrecht University Repository Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
air conditioning Arctic climate deglaciation glacial period ice sheet iceberg sea sea ice temperature carbon 14 water |
spellingShingle |
air conditioning Arctic climate deglaciation glacial period ice sheet iceberg sea sea ice temperature carbon 14 water Thornalley, D.J.R. Bauch, H.A. Gebbie, G. Guo, W. Ziegler, M. Bernasconi, S.M. Barker, S. Skinner, L.C. Yu, J. A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period |
topic_facet |
air conditioning Arctic climate deglaciation glacial period ice sheet iceberg sea sea ice temperature carbon 14 water |
description |
Changes in the formation of dense water in the Arctic Ocean and Nordic Seas [the "Arctic Mediterranean" (AM)] probably contributed to the altered climate of the last glacial period. We examined past changes in AM circulation by reconstructing radiocarbon ventilation ages of the deep Nordic Seas over the past 30,000 years. Our results show that the glacial deep AM was extremely poorly ventilated (ventilation ages of up to 10,000 years). Subsequent episodic overflow of aged water into the mid-depth North Atlantic occurred during deglaciation. Proxy data also suggest that the deep glacial AM was ∼2° to 3°C warmer than modern temperatures; deglacial mixing of the deep AM with the upper ocean thus potentially contributed to the melting of sea ice, icebergs, and terminal ice-sheet margins. |
author2 |
Stratigraphy & paleontology Stratigraphy and paleontology |
format |
Article in Journal/Newspaper |
author |
Thornalley, D.J.R. Bauch, H.A. Gebbie, G. Guo, W. Ziegler, M. Bernasconi, S.M. Barker, S. Skinner, L.C. Yu, J. |
author_facet |
Thornalley, D.J.R. Bauch, H.A. Gebbie, G. Guo, W. Ziegler, M. Bernasconi, S.M. Barker, S. Skinner, L.C. Yu, J. |
author_sort |
Thornalley, D.J.R. |
title |
A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period |
title_short |
A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period |
title_full |
A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period |
title_fullStr |
A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period |
title_full_unstemmed |
A warm and poorly ventilated deep Arctic Mediterranean during the last glacial period |
title_sort |
warm and poorly ventilated deep arctic mediterranean during the last glacial period |
publishDate |
2015 |
url |
https://dspace.library.uu.nl/handle/1874/319710 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Ice Sheet Iceberg* Nordic Seas North Atlantic Sea ice |
genre_facet |
Arctic Arctic Ocean Ice Sheet Iceberg* Nordic Seas North Atlantic Sea ice |
op_relation |
0036-8075 https://dspace.library.uu.nl/handle/1874/319710 |
op_rights |
info:eu-repo/semantics/EmbargoedAccess |
_version_ |
1772178191176171520 |