How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern?
Marine Isotope Stage (MIS) 5e (130–116 ka) represents an important ‘process analogue’ for understanding the climatic feedbacks and responses likely active under future anthropogenic warming. Reconstructing the Southern Ocean (SO) palaeoenvironment during MIS 5e and comparing it to the present day pr...
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ftnerc:oai:nora.nerc.ac.uk:529395 2023-05-15T13:41:45+02:00 How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern? Chadwick, M. Allen, C.S. Sime, L.C. Crosta, X. Hillenbrand, C.-D. 2022-01 text http://nora.nerc.ac.uk/id/eprint/529395/ https://nora.nerc.ac.uk/id/eprint/529395/1/Manuscript_revised.pdf https://www.sciencedirect.com/science/article/pii/S0377839821001079 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/529395/1/Manuscript_revised.pdf Chadwick, M. orcid:0000-0002-3861-4564 Allen, C.S. orcid:0000-0002-0938-0551 Sime, L.C. orcid:0000-0002-9093-7926 Crosta, X.; Hillenbrand, C.-D. orcid:0000-0003-0240-7317 . 2022 How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern? Marine Micropaleontology, 170, 102066. 14, pp. https://doi.org/10.1016/j.marmicro.2021.102066 <https://doi.org/10.1016/j.marmicro.2021.102066> cc_by_nc_nd_4 CC-BY-NC-ND Publication - Article PeerReviewed 2022 ftnerc 2023-02-04T19:51:38Z Marine Isotope Stage (MIS) 5e (130–116 ka) represents an important ‘process analogue’ for understanding the climatic feedbacks and responses likely active under future anthropogenic warming. Reconstructing the Southern Ocean (SO) palaeoenvironment during MIS 5e and comparing it to the present day provides insights into the different responses of the SO sectors to a warmer climate. This study presents new records from seven marine sediment cores for MIS 5e together with their surface sediment records; all cores are located south of 55 oS. We investigate changes in diatom species assemblage and the accompanying variations in sea surface temperatures, winter sea-ice extent (WSIE) and glacial meltwater flux. All records show warmer conditions and a reduced WSIE during MIS 5e relative to the surface sediments. While the Pacific and Indian Sector records present very stable conditions throughout MIS 5e, the Atlantic Sector records display much more changeable conditions, particularly with respect to the WSIE. These variable conditions are attributed to higher iceberg and glacial meltwater flux in the Weddell Sea. This evidence for increased iceberg and glacial meltwater flux in the Weddell Sea during MIS 5e may have significant implications for understanding the stability of the West Antarctic Ice Sheet, both during MIS 5e and under future warming. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Iceberg* Sea ice Southern Ocean Weddell Sea Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Weddell Sea West Antarctic Ice Sheet Pacific Indian Weddell |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
Marine Isotope Stage (MIS) 5e (130–116 ka) represents an important ‘process analogue’ for understanding the climatic feedbacks and responses likely active under future anthropogenic warming. Reconstructing the Southern Ocean (SO) palaeoenvironment during MIS 5e and comparing it to the present day provides insights into the different responses of the SO sectors to a warmer climate. This study presents new records from seven marine sediment cores for MIS 5e together with their surface sediment records; all cores are located south of 55 oS. We investigate changes in diatom species assemblage and the accompanying variations in sea surface temperatures, winter sea-ice extent (WSIE) and glacial meltwater flux. All records show warmer conditions and a reduced WSIE during MIS 5e relative to the surface sediments. While the Pacific and Indian Sector records present very stable conditions throughout MIS 5e, the Atlantic Sector records display much more changeable conditions, particularly with respect to the WSIE. These variable conditions are attributed to higher iceberg and glacial meltwater flux in the Weddell Sea. This evidence for increased iceberg and glacial meltwater flux in the Weddell Sea during MIS 5e may have significant implications for understanding the stability of the West Antarctic Ice Sheet, both during MIS 5e and under future warming. |
format |
Article in Journal/Newspaper |
author |
Chadwick, M. Allen, C.S. Sime, L.C. Crosta, X. Hillenbrand, C.-D. |
spellingShingle |
Chadwick, M. Allen, C.S. Sime, L.C. Crosta, X. Hillenbrand, C.-D. How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern? |
author_facet |
Chadwick, M. Allen, C.S. Sime, L.C. Crosta, X. Hillenbrand, C.-D. |
author_sort |
Chadwick, M. |
title |
How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern? |
title_short |
How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern? |
title_full |
How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern? |
title_fullStr |
How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern? |
title_full_unstemmed |
How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern? |
title_sort |
how does the southern ocean palaeoenvironment during marine isotope stage 5e compare to the modern? |
publisher |
Elsevier |
publishDate |
2022 |
url |
http://nora.nerc.ac.uk/id/eprint/529395/ https://nora.nerc.ac.uk/id/eprint/529395/1/Manuscript_revised.pdf https://www.sciencedirect.com/science/article/pii/S0377839821001079 |
geographic |
Antarctic Southern Ocean Weddell Sea West Antarctic Ice Sheet Pacific Indian Weddell |
geographic_facet |
Antarctic Southern Ocean Weddell Sea West Antarctic Ice Sheet Pacific Indian Weddell |
genre |
Antarc* Antarctic Ice Sheet Iceberg* Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Ice Sheet Iceberg* Sea ice Southern Ocean Weddell Sea |
op_relation |
https://nora.nerc.ac.uk/id/eprint/529395/1/Manuscript_revised.pdf Chadwick, M. orcid:0000-0002-3861-4564 Allen, C.S. orcid:0000-0002-0938-0551 Sime, L.C. orcid:0000-0002-9093-7926 Crosta, X.; Hillenbrand, C.-D. orcid:0000-0003-0240-7317 . 2022 How does the Southern Ocean palaeoenvironment during Marine Isotope Stage 5e compare to the modern? Marine Micropaleontology, 170, 102066. 14, pp. https://doi.org/10.1016/j.marmicro.2021.102066 <https://doi.org/10.1016/j.marmicro.2021.102066> |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766157220537434112 |