Sea ice induced changes in ocean circulation during the Eemian
International audience We argue that Arctic sea ice played an important role during early stages of the last glacial inception. Two simulations of the Institut Pierre Simon Laplace coupled model 4 are analyzed, one for the time of maximum high latitude summer insolation during the last interglacial,...
Published in: | Climate Dynamics |
---|---|
Main Authors: | , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2010
|
Subjects: | |
Online Access: | https://hal.science/hal-03019736 https://doi.org/10.1007/s00382-009-0709-2 |
id |
ftceafr:oai:HAL:hal-03019736v1 |
---|---|
record_format |
openpolar |
spelling |
ftceafr:oai:HAL:hal-03019736v1 2024-09-15T18:17:16+00:00 Sea ice induced changes in ocean circulation during the Eemian Born, Andreas Nisancioglu, Kerim H. Braconnot, Pascale Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) 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) Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID) 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)) 2010 https://hal.science/hal-03019736 https://doi.org/10.1007/s00382-009-0709-2 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-009-0709-2 hal-03019736 https://hal.science/hal-03019736 doi:10.1007/s00382-009-0709-2 ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.science/hal-03019736 Climate Dynamics, 2010, 35, pp.1361-1371. ⟨10.1007/s00382-009-0709-2⟩ [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 ftceafr https://doi.org/10.1007/s00382-009-0709-2 2024-07-22T13:17:15Z International audience We argue that Arctic sea ice played an important role during early stages of the last glacial inception. Two simulations of the Institut Pierre Simon Laplace coupled model 4 are analyzed, one for the time of maximum high latitude summer insolation during the last interglacial, the Eemian, and a second one for the subsequent summer insolation minimum, at the last glacial inception. During the inception, increased Arctic freshwater export by sea ice shuts down Labrador Sea convection and weakens overturning circulation and oceanic heat transport by 27 and 15%, respectively. A positive feedback of the Atlantic subpolar gyre enhances the initial freshening by sea ice. The reorganization of the subpolar surface circulation, however, makes the Atlantic inflow more saline and thereby maintains deep convection in the Nordic Seas. These results highlight the importance of an accurate representation of dynamic sea ice for the study of past and future climate changes. Article in Journal/Newspaper Labrador Sea Nordic Seas Sea ice HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Climate Dynamics 35 7-8 1361 1371 |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
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 Born, Andreas Nisancioglu, Kerim H. Braconnot, Pascale Sea ice induced changes in ocean circulation during the Eemian |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience We argue that Arctic sea ice played an important role during early stages of the last glacial inception. Two simulations of the Institut Pierre Simon Laplace coupled model 4 are analyzed, one for the time of maximum high latitude summer insolation during the last interglacial, the Eemian, and a second one for the subsequent summer insolation minimum, at the last glacial inception. During the inception, increased Arctic freshwater export by sea ice shuts down Labrador Sea convection and weakens overturning circulation and oceanic heat transport by 27 and 15%, respectively. A positive feedback of the Atlantic subpolar gyre enhances the initial freshening by sea ice. The reorganization of the subpolar surface circulation, however, makes the Atlantic inflow more saline and thereby maintains deep convection in the Nordic Seas. These results highlight the importance of an accurate representation of dynamic sea ice for the study of past and future climate changes. |
author2 |
Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) 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) Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID) 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)) |
format |
Article in Journal/Newspaper |
author |
Born, Andreas Nisancioglu, Kerim H. Braconnot, Pascale |
author_facet |
Born, Andreas Nisancioglu, Kerim H. Braconnot, Pascale |
author_sort |
Born, Andreas |
title |
Sea ice induced changes in ocean circulation during the Eemian |
title_short |
Sea ice induced changes in ocean circulation during the Eemian |
title_full |
Sea ice induced changes in ocean circulation during the Eemian |
title_fullStr |
Sea ice induced changes in ocean circulation during the Eemian |
title_full_unstemmed |
Sea ice induced changes in ocean circulation during the Eemian |
title_sort |
sea ice induced changes in ocean circulation during the eemian |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.science/hal-03019736 https://doi.org/10.1007/s00382-009-0709-2 |
genre |
Labrador Sea Nordic Seas Sea ice |
genre_facet |
Labrador Sea Nordic Seas Sea ice |
op_source |
ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.science/hal-03019736 Climate Dynamics, 2010, 35, pp.1361-1371. ⟨10.1007/s00382-009-0709-2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-009-0709-2 hal-03019736 https://hal.science/hal-03019736 doi:10.1007/s00382-009-0709-2 |
op_doi |
https://doi.org/10.1007/s00382-009-0709-2 |
container_title |
Climate Dynamics |
container_volume |
35 |
container_issue |
7-8 |
container_start_page |
1361 |
op_container_end_page |
1371 |
_version_ |
1810455281548656640 |