Insolation and CO2 induced variations in the sea ice of the last nine interglacials and their comparison with the future

Understanding the sea ice variability and the mechanisms involved during warm periods of the Earth is essential for a better understanding of the sea ice changes at the present and in the future. Based on simulations with the model LOVECLIM, this study investigates the sea ice variations during the...

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Main Authors: Wu, Zhipeng, Yin, Qiuzhen, Guo, Zhengtang, Berger, André, ICP14: 14th International Conference on Paleoceanography
Other Authors: UCL - SST/ELI - Earth and Life Institute, UCL - SST/ELI/ELIC - Earth & Climate
Format: Conference Object
Language:English
Published: 2022
Subjects:
Online Access:http://hdl.handle.net/2078.1/268991
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spelling ftunivlouvain:oai:dial.uclouvain.be:boreal:268991 2024-05-12T07:59:09+00:00 Insolation and CO2 induced variations in the sea ice of the last nine interglacials and their comparison with the future Wu, Zhipeng Yin, Qiuzhen Guo, Zhengtang Berger, André ICP14: 14th International Conference on Paleoceanography UCL - SST/ELI - Earth and Life Institute UCL - SST/ELI/ELIC - Earth & Climate 2022 http://hdl.handle.net/2078.1/268991 eng eng info:eu-repo/grantAgreement/Université catholique de Louvain/MIS/QuantLoess boreal:268991 http://hdl.handle.net/2078.1/268991 info:eu-repo/semantics/openAccess info:eu-repo/semantics/conferenceObject 2022 ftunivlouvain 2024-04-17T16:32:11Z Understanding the sea ice variability and the mechanisms involved during warm periods of the Earth is essential for a better understanding of the sea ice changes at the present and in the future. Based on simulations with the model LOVECLIM, this study investigates the sea ice variations during the last nine interglacials and focuses on the inter-comparison between interglacials as well as their differences from the present and future. Our results show that LOVECLIM has a reasonable performance in simulating sea ice variations. For the double CO2 experiment and the Shared Socioeconomic Pathway (SSP)1-2.6, SSP2-4.5 and SSP5-8.5 scenario experiments, the global, Arctic and Southern Ocean sea ice areas simulated by LOVECLIM all fall in the range of the multi-model results from CMIP 6. The results show that the annual mean Arctic sea ice variation is primarily controlled by local summer insolation, while the annual mean Southern Ocean sea ice variation is more influenced by the CO2 concentration but the effect of local summer insolation can’t be ignored. The lowest Arctic sea ice area results from the highest summer insolation at MIS-15, and the lowest Southern Ocean sea ice area at MIS-9 is explained by the highest CO2 concentration and moderate local summer insolation. As compared to the present, the last nine interglacials all have much less sea ice in the Arctic annually and seasonally due to high summer insolation. They also have much less Arctic sea ice in summer than the double CO2 experiment, which makes to some degree the interglacials possible analogues for the future in terms of the changes of sea ice. However, compared to the double CO2 experiment, the interglacials all have much more sea ice in the Southern Ocean due to their much lower CO2 concentration, which suggests the inappropriateness of considering the interglacials as analogues for the future in the Southern Ocean. Our results suggest that in the search for potential analogues of the present and future climate, the seasonal and regional ... Conference Object Arctic Sea ice Southern Ocean DIAL@UCLouvain (Université catholique de Louvain) Arctic Southern Ocean
institution Open Polar
collection DIAL@UCLouvain (Université catholique de Louvain)
op_collection_id ftunivlouvain
language English
description Understanding the sea ice variability and the mechanisms involved during warm periods of the Earth is essential for a better understanding of the sea ice changes at the present and in the future. Based on simulations with the model LOVECLIM, this study investigates the sea ice variations during the last nine interglacials and focuses on the inter-comparison between interglacials as well as their differences from the present and future. Our results show that LOVECLIM has a reasonable performance in simulating sea ice variations. For the double CO2 experiment and the Shared Socioeconomic Pathway (SSP)1-2.6, SSP2-4.5 and SSP5-8.5 scenario experiments, the global, Arctic and Southern Ocean sea ice areas simulated by LOVECLIM all fall in the range of the multi-model results from CMIP 6. The results show that the annual mean Arctic sea ice variation is primarily controlled by local summer insolation, while the annual mean Southern Ocean sea ice variation is more influenced by the CO2 concentration but the effect of local summer insolation can’t be ignored. The lowest Arctic sea ice area results from the highest summer insolation at MIS-15, and the lowest Southern Ocean sea ice area at MIS-9 is explained by the highest CO2 concentration and moderate local summer insolation. As compared to the present, the last nine interglacials all have much less sea ice in the Arctic annually and seasonally due to high summer insolation. They also have much less Arctic sea ice in summer than the double CO2 experiment, which makes to some degree the interglacials possible analogues for the future in terms of the changes of sea ice. However, compared to the double CO2 experiment, the interglacials all have much more sea ice in the Southern Ocean due to their much lower CO2 concentration, which suggests the inappropriateness of considering the interglacials as analogues for the future in the Southern Ocean. Our results suggest that in the search for potential analogues of the present and future climate, the seasonal and regional ...
author2 UCL - SST/ELI - Earth and Life Institute
UCL - SST/ELI/ELIC - Earth & Climate
format Conference Object
author Wu, Zhipeng
Yin, Qiuzhen
Guo, Zhengtang
Berger, André
ICP14: 14th International Conference on Paleoceanography
spellingShingle Wu, Zhipeng
Yin, Qiuzhen
Guo, Zhengtang
Berger, André
ICP14: 14th International Conference on Paleoceanography
Insolation and CO2 induced variations in the sea ice of the last nine interglacials and their comparison with the future
author_facet Wu, Zhipeng
Yin, Qiuzhen
Guo, Zhengtang
Berger, André
ICP14: 14th International Conference on Paleoceanography
author_sort Wu, Zhipeng
title Insolation and CO2 induced variations in the sea ice of the last nine interglacials and their comparison with the future
title_short Insolation and CO2 induced variations in the sea ice of the last nine interglacials and their comparison with the future
title_full Insolation and CO2 induced variations in the sea ice of the last nine interglacials and their comparison with the future
title_fullStr Insolation and CO2 induced variations in the sea ice of the last nine interglacials and their comparison with the future
title_full_unstemmed Insolation and CO2 induced variations in the sea ice of the last nine interglacials and their comparison with the future
title_sort insolation and co2 induced variations in the sea ice of the last nine interglacials and their comparison with the future
publishDate 2022
url http://hdl.handle.net/2078.1/268991
geographic Arctic
Southern Ocean
geographic_facet Arctic
Southern Ocean
genre Arctic
Sea ice
Southern Ocean
genre_facet Arctic
Sea ice
Southern Ocean
op_relation info:eu-repo/grantAgreement/Université catholique de Louvain/MIS/QuantLoess
boreal:268991
http://hdl.handle.net/2078.1/268991
op_rights info:eu-repo/semantics/openAccess
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