Climate of the Past
Climate of the Past
CP
Articles | Volume 15, issue 2
Articles | Volume 15, issue 2
https://doi.org/10.5194/cp-15-539-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-15-539-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 2
Research article
 | 
27 Mar 2019
Research article |  | 27 Mar 2019

Insensitivity of alkenone carbon isotopes to atmospheric CO2 at low to moderate CO2 levels

Marcus P. S. Badger, Thomas B. Chalk, Gavin L. Foster, Paul R. Bown, Samantha J. Gibbs, Philip F. Sexton, Daniela N. Schmidt, Heiko Pälike, Andreas Mackensen, and Richard D. Pancost

Supplement

https://doi.org/10.5194/cp-15-539-2019-supplement

Data sets

Alkenone carbon isotopes, unsatutation measurements, coccolith size and stable planktic foraminifera carbon isotopes for estimation of atmospheric CO2 at ODP Site 999 Marcus P. S. Badger, Thomas B. Chalk, Gavin L. Foster, Paul R. Bown, Samantha J. Gibbs, Philip F. Sexton, Daniela N. Schmidt, Heiko Pälike, Andreas Mackensen, and Richard D. Pancost https://doi.pangaea.de/10.1594/PANGAEA.899353

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Short summary
Understanding how atmospheric CO2 has affected the climate of the past is an important way of furthering our understanding of how CO2 may affect our climate in the future. There are several ways of determining CO2 in the past; in this paper, we ground-truth one method (based on preserved organic matter from alga) against the record of CO2 preserved as bubbles in ice cores over a glacial–interglacial cycle. We find that there is a discrepancy between the two.
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