Olivier Cartapanis
Complex spatio-temporal structure of the Holocene Thermal Maximum
Cartapanis, Olivier; Jonkers, Lukas; Moffa-Sanchez, Paola; Jaccard, Samuel L.; de Vernal, Anne
Authors
Lukas Jonkers
Dr Paola Moffa Sanchez paola.l.moffa-sanchez@durham.ac.uk
Assistant Professor
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 | Feb 13, 2023 |
Journal | Nature Communications |
Electronic ISSN | 2041-1723 |
Publisher | Nature Research |
Peer Reviewed | Peer Reviewed |
Volume | 13 |
Issue | 2022 |
Article Number | 5662 |
DOI | https://doi.org/10.1038/s41467-022-33362-1 |
Public URL | https://durham-repository.worktribe.com/output/1184394 |
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