Articles | Volume 15, issue 1
Clim. Past, 15, 91–104, 2019
https://doi.org/10.5194/cp-15-91-2019
Clim. Past, 15, 91–104, 2019
https://doi.org/10.5194/cp-15-91-2019

Research article 16 Jan 2019

Research article | 16 Jan 2019

The 405 kyr and 2.4 Myr eccentricity components in Cenozoic carbon isotope records

Ilja J. Kocken et al.

Data sets

Stable isotope record, carbonate and organic carbon content of the Miocene section of IODP Site 321-U1337 A. Holbourn, W. Kuhnt, K. G. D. Kochhann, N. Andersen, and K. J. S. Meier https://doi.org/10.1594/PANGAEA.839743

Age models and stable isotope analysis on sediment core Site 199-1218 from the equatorial Pacific H. Pälike, R. D. Norris, J. O. Herrle, P. A. Wilson, P. A., Coxall, C. H. Lear, N. J. Shackleton, A. K. Tripati, and B. S. Wade https://doi.org/10.1594/PANGAEA.547942

Obliquity and long eccentricity pacing of the Middle Miocene climate transition J. Tian, M. Yang, M.-W. Lyle, R. Wilkens, and J. K. Shackford https://doi.org/10.1002/ggge.20108

Model code and software

Scripts and data used in "The 405 kyr and 2.4 Myr eccentricity components in Cenozoic carbon isotope records" I. J. Kocken https://doi.org/10.5281/zenodo.2250248

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Short summary
Marine organic carbon burial could link the 405 thousand year eccentricity cycle in the long-term carbon cycle to that observed in climate records. Here, we simulate the response of the carbon cycle to astronomical forcing. We find a strong 2.4 million year cycle in the model output, which is present as an amplitude modulator of the 405 and 100 thousand year eccentricity cycles in a newly assembled composite record.