Influence of Bering Strait flow and North Atlantic circulation on glacial sea-level changes
Letters International audience Sea-level fluctuations of about 20–30 m occurred throughout the last glacial period. These fluctuations seem to have been derived primarily from changes in the volume of Northern Hemisphere ice sheets , and cannot be attributed solely to ice melt caused by varying sola...
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ftuniversailles:oai:HAL:hal-02916745v1 2024-04-28T08:14:42+00:00 Influence of Bering Strait flow and North Atlantic circulation on glacial sea-level changes Hu, Aixue Meehl, Gerald Otto-Bliesner, Bette L. Waelbroeck, Claire Han, Weiqing Loutre, Marie-France Lambeck, Kurt Mitrovica, Jerry X. Rosenbloom, Nan National Center for Atmospheric Research Boulder (NCAR) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Paléocéanographie (PALEOCEAN) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Department of Atmospheric and Oceanic Sciences Boulder (ATOC) University of Colorado Boulder Catholic University of Leuven = Katholieke Universiteit Leuven (KU Leuven) Research School of Earth Sciences ANU, Canberra (RSES) ANU College of Science Canberra Australian National University (ANU)-Australian National University (ANU) Harvard University 2010-02 https://hal.science/hal-02916745 https://doi.org/10.1038/ngeo729 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/ngeo729 hal-02916745 https://hal.science/hal-02916745 doi:10.1038/ngeo729 WOS: 000274086400018 ISSN: 1752-0894 Nature Geoscience https://hal.science/hal-02916745 Nature Geoscience, 2010, 3 (2), pp.118-121. ⟨10.1038/ngeo729⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2010 ftuniversailles https://doi.org/10.1038/ngeo729 2024-04-04T17:36:58Z Letters International audience Sea-level fluctuations of about 20–30 m occurred throughout the last glacial period. These fluctuations seem to have been derived primarily from changes in the volume of Northern Hemisphere ice sheets , and cannot be attributed solely to ice melt caused by varying solar radiation. Here we use a fully coupled climate model to show that the transport of relatively fresh Pacific water into the North Atlantic Ocean was limited when lower sea level restricted or closed the Bering Strait, resulting in saltier North Atlantic surface waters. This invigorated deep convection in the North Atlantic Ocean, strengthening meridional overturning circulation and northward heat transport in our model, which consequently promoted melting of ice sheets in North America and Europe. Our simulations show that the associated sea-level rise led to a reopening of the Bering Strait; the flux of relatively fresh water into the North Atlantic Ocean muted meridional overturning circulation and led to cooling and ice-sheet advance in the Northern Hemisphere. We conclude that the repetition of this cycle could produce the sea-level changes that have been observed throughout the last glacial cycle. Article in Journal/Newspaper Bering Strait Ice Sheet North Atlantic Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Nature Geoscience 3 2 118 121 |
institution |
Open Polar |
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Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Hu, Aixue Meehl, Gerald Otto-Bliesner, Bette L. Waelbroeck, Claire Han, Weiqing Loutre, Marie-France Lambeck, Kurt Mitrovica, Jerry X. Rosenbloom, Nan Influence of Bering Strait flow and North Atlantic circulation on glacial sea-level changes |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
Letters International audience Sea-level fluctuations of about 20–30 m occurred throughout the last glacial period. These fluctuations seem to have been derived primarily from changes in the volume of Northern Hemisphere ice sheets , and cannot be attributed solely to ice melt caused by varying solar radiation. Here we use a fully coupled climate model to show that the transport of relatively fresh Pacific water into the North Atlantic Ocean was limited when lower sea level restricted or closed the Bering Strait, resulting in saltier North Atlantic surface waters. This invigorated deep convection in the North Atlantic Ocean, strengthening meridional overturning circulation and northward heat transport in our model, which consequently promoted melting of ice sheets in North America and Europe. Our simulations show that the associated sea-level rise led to a reopening of the Bering Strait; the flux of relatively fresh water into the North Atlantic Ocean muted meridional overturning circulation and led to cooling and ice-sheet advance in the Northern Hemisphere. We conclude that the repetition of this cycle could produce the sea-level changes that have been observed throughout the last glacial cycle. |
author2 |
National Center for Atmospheric Research Boulder (NCAR) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Paléocéanographie (PALEOCEAN) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Department of Atmospheric and Oceanic Sciences Boulder (ATOC) University of Colorado Boulder Catholic University of Leuven = Katholieke Universiteit Leuven (KU Leuven) Research School of Earth Sciences ANU, Canberra (RSES) ANU College of Science Canberra Australian National University (ANU)-Australian National University (ANU) Harvard University |
format |
Article in Journal/Newspaper |
author |
Hu, Aixue Meehl, Gerald Otto-Bliesner, Bette L. Waelbroeck, Claire Han, Weiqing Loutre, Marie-France Lambeck, Kurt Mitrovica, Jerry X. Rosenbloom, Nan |
author_facet |
Hu, Aixue Meehl, Gerald Otto-Bliesner, Bette L. Waelbroeck, Claire Han, Weiqing Loutre, Marie-France Lambeck, Kurt Mitrovica, Jerry X. Rosenbloom, Nan |
author_sort |
Hu, Aixue |
title |
Influence of Bering Strait flow and North Atlantic circulation on glacial sea-level changes |
title_short |
Influence of Bering Strait flow and North Atlantic circulation on glacial sea-level changes |
title_full |
Influence of Bering Strait flow and North Atlantic circulation on glacial sea-level changes |
title_fullStr |
Influence of Bering Strait flow and North Atlantic circulation on glacial sea-level changes |
title_full_unstemmed |
Influence of Bering Strait flow and North Atlantic circulation on glacial sea-level changes |
title_sort |
influence of bering strait flow and north atlantic circulation on glacial sea-level changes |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-02916745 https://doi.org/10.1038/ngeo729 |
genre |
Bering Strait Ice Sheet North Atlantic |
genre_facet |
Bering Strait Ice Sheet North Atlantic |
op_source |
ISSN: 1752-0894 Nature Geoscience https://hal.science/hal-02916745 Nature Geoscience, 2010, 3 (2), pp.118-121. ⟨10.1038/ngeo729⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/ngeo729 hal-02916745 https://hal.science/hal-02916745 doi:10.1038/ngeo729 WOS: 000274086400018 |
op_doi |
https://doi.org/10.1038/ngeo729 |
container_title |
Nature Geoscience |
container_volume |
3 |
container_issue |
2 |
container_start_page |
118 |
op_container_end_page |
121 |
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1797580649588064256 |