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Complex spatio-temporal structure of the Holocene Thermal Maximum

Cartapanis, Olivier; Jonkers, Lukas; Moffa-Sanchez, Paola; Jaccard, Samuel L.; de Vernal, Anne

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Authors

Olivier Cartapanis

Lukas Jonkers

Samuel L. Jaccard

Anne de Vernal



Abstract

Inconsistencies between Holocene climate reconstructions and numerical model simulations question the robustness of climate models and proxy temperature records. Climate reconstructions suggest an early-middle Holocene Thermal Maximum (HTM) followed by gradual cooling, whereas climate models indicate continuous warming. This discrepancy either implies seasonal biases in proxy-based climate reconstructions, or that the climate model sensitivity to forcings and feedbacks needs to be reevaluated. Here, we analyze a global database of Holocene paleotemperature records to investigate the spatiotemporal structure of the HTM. Continental proxy records at mid and high latitudes of the Northern Hemisphere portray a “classic” HTM (8–4 ka). In contrast, marine proxy records from the same latitudes reveal an earlier HTM (11–7ka), while a clear temperature anomaly is missing in the tropics. The results indicate a heterogeneous response to climate forcing and highlight the lack of globally synchronous HTM.

Citation

Cartapanis, O., Jonkers, L., Moffa-Sanchez, P., Jaccard, S. L., & de Vernal, A. (2022). Complex spatio-temporal structure of the Holocene Thermal Maximum. Nature Communications, 13(2022), Article 5662. https://doi.org/10.1038/s41467-022-33362-1

Journal Article Type Article
Acceptance Date Sep 14, 2022
Online Publication Date Oct 3, 2022
Publication Date 2022
Deposit Date Dec 19, 2022
Publicly Available Date Mar 29, 2024
Journal Nature Communications
Publisher Nature Research
Peer Reviewed Peer Reviewed
Volume 13
Issue 2022
Article Number 5662
DOI https://doi.org/10.1038/s41467-022-33362-1

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http://creativecommons.org/licenses/by/4.0/

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This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.





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