Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene
Marine sediment records from the Oligocene and Miocene reveal clear 400,000-year climate cycles related to variations in orbital eccentricity. These cycles are also observed in the Plio-Pleistocene records of the global carbon cycle. However, they are absent from the Late Pleistocene ice-age record...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/305587 2023-12-10T09:40:54+01:00 Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene De Boer, B. Lourens, Lucas J. Van De Wal, Roderik S.W. Sub Dynamics Meteorology Stratigraphy and paleontology Marine and Atmospheric Research Stratigraphy & paleontology 2014-01-02 image/pdf https://dspace.library.uu.nl/handle/1874/305587 eng eng https://dspace.library.uu.nl/handle/1874/305587 info:eu-repo/semantics/OpenAccess 2014 ftunivutrecht 2023-11-15T23:12:10Z Marine sediment records from the Oligocene and Miocene reveal clear 400,000-year climate cycles related to variations in orbital eccentricity. These cycles are also observed in the Plio-Pleistocene records of the global carbon cycle. However, they are absent from the Late Pleistocene ice-age record over the past 1.5 million years. Here we present a simulation of global ice volume over the past 5 million years with a coupled system of four three-dimensional ice-sheet models. Our simulation shows that the 400,000-year long eccentricity cycles of Antarctica vary coherently with δ 13 C data during the Pleistocene, suggesting that they drove the long-term carbon cycle changes throughout the past 35 million years. The 400,000-year response of Antarctica was eventually suppressed by the dominant 100,000-year glacial cycles of the large ice sheets in the Northern Hemisphere.© 2014 Macmillan Publishers Limited. Other/Unknown Material Antarc* Antarctic Antarctica Ice Sheet Utrecht University Repository Antarctic |
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Open Polar |
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Utrecht University Repository |
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ftunivutrecht |
language |
English |
description |
Marine sediment records from the Oligocene and Miocene reveal clear 400,000-year climate cycles related to variations in orbital eccentricity. These cycles are also observed in the Plio-Pleistocene records of the global carbon cycle. However, they are absent from the Late Pleistocene ice-age record over the past 1.5 million years. Here we present a simulation of global ice volume over the past 5 million years with a coupled system of four three-dimensional ice-sheet models. Our simulation shows that the 400,000-year long eccentricity cycles of Antarctica vary coherently with δ 13 C data during the Pleistocene, suggesting that they drove the long-term carbon cycle changes throughout the past 35 million years. The 400,000-year response of Antarctica was eventually suppressed by the dominant 100,000-year glacial cycles of the large ice sheets in the Northern Hemisphere.© 2014 Macmillan Publishers Limited. |
author2 |
Sub Dynamics Meteorology Stratigraphy and paleontology Marine and Atmospheric Research Stratigraphy & paleontology |
author |
De Boer, B. Lourens, Lucas J. Van De Wal, Roderik S.W. |
spellingShingle |
De Boer, B. Lourens, Lucas J. Van De Wal, Roderik S.W. Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene |
author_facet |
De Boer, B. Lourens, Lucas J. Van De Wal, Roderik S.W. |
author_sort |
De Boer, B. |
title |
Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene |
title_short |
Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene |
title_full |
Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene |
title_fullStr |
Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene |
title_full_unstemmed |
Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene |
title_sort |
persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene |
publishDate |
2014 |
url |
https://dspace.library.uu.nl/handle/1874/305587 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_relation |
https://dspace.library.uu.nl/handle/1874/305587 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1784897218118942720 |