Articles | Volume 16, issue 6
https://doi.org/10.5194/cp-16-2381-2020
https://doi.org/10.5194/cp-16-2381-2020
Research article
 | 
28 Nov 2020
Research article |  | 28 Nov 2020

Late Paleocene–early Eocene Arctic Ocean sea surface temperatures: reassessing biomarker paleothermometry at Lomonosov Ridge

Appy Sluijs, Joost Frieling, Gordon N. Inglis, Klaas G. J. Nierop, Francien Peterse, Francesca Sangiorgi, and Stefan Schouten

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Cited articles

Backman, J., Moran, K., McInroy, D. B., Mayer, L. A., and Expedition-302-Scientists: Proceedings of the Integrated Ocean Drilling Program, Integrated Ocean Drilling Program Management International, Inc., Edinburgh, 302, https://doi.org/10.2204/​iodp.proc.302.2006, 2006. 
Baxter, A. J., Hopmans, E. C., Russell, J. M., and Sinninghe Damsté, J. S.: Bacterial GMGTs in East African lake sediments: Their potential as palaeotemperature indicators, Geochim. Cosmochim. Ac., 259, 155–169, https://doi.org/10.1016/j.gca.2019.05.039, 2019. 
Berry, E. W.: A Possible Explanation of Upper Eocene Climates, P. Am. Philos. Soc., 61, 1–14, 1922. 
Besseling, M. A., Hopmans, E. C., Bale, N. J., Schouten, S., Damsté, J. S. S., and Villanueva, L.: The absence of intact polar lipid-derived GDGTs in marine waters dominated by Marine Group II: Implications for lipid biosynthesis in Archaea, Sci. Rep.-UK, 10, 294, https://doi.org/10.1038/s41598-019-57035-0, 2020. 
Bijl, P. K., Schouten, S., Sluijs, A., Reichart, G.-J., Zachos, J. C., and Brinkhuis, H.: Early Palaeogene temperature evolution of the southwest Pacific Ocean, Nature, 461, 776–779, 2009. 
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Short summary
We revisit 15-year-old reconstructions of sea surface temperatures in the Arctic Ocean for the late Paleocene and early Eocene epochs (∼ 57–53 million years ago) based on the distribution of fossil membrane lipids of archaea preserved in Arctic Ocean sediments. We find that improvements in the methods over the past 15 years do not lead to different results. However, data quality is now higher and potential biases better characterized. Results confirm remarkable Arctic warmth during this time.