Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene. De Boer, B., Lourens, L., J., & Van De Wal, R., S. Nature Communications, Nature Publishing Group, 2014. doi abstract bibtex 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.
@article{
title = {Persistent 400,000-year variability of antarctic ice volume and the carbon cycle is revealed throughout the plio-pleistocene},
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year = {2014},
volume = {5},
publisher = {Nature Publishing Group},
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abstract = {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.},
bibtype = {article},
author = {De Boer, B and Lourens, Lucas J and Van De Wal, Roderik S.W.},
doi = {10.1038/ncomms3999},
journal = {Nature Communications}
}
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