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Journal Article

No consistent simulated trends in the Atlantic Meridional Overturning Circulation for the past 6,000 years

MPS-Authors
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Bader,  Juergen
Director’s Research Group, Department Climate Variability, MPI for Meteorology, Max Planck Society;

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Jungclaus,  Johann H.       
Director’s Research Group, Department Climate Variability, MPI for Meteorology, Max Planck Society;

External Resource

https://doi.org/10.5281/zenodo.7799682
(Supplementary material)

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GRL-2023-Jiang.pdf
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Citation

Jiang, Z., Brierley, C. M., Bader, J., Braconnot, P., Erb, M., Hopcroft, P. O., et al. (2023). No consistent simulated trends in the Atlantic Meridional Overturning Circulation for the past 6,000 years. Geophysical Research Letters, 50: e2023GL103078. doi:10.1029/2023GL103078.


Cite as: https://hdl.handle.net/21.11116/0000-000D-2CF5-E
Abstract
Abstract The Atlantic Meridional Overturning Circulation (AMOC) is a key feature of the North Atlantic with global ocean impacts. The AMOC's response to past changes in forcings during the Holocene provides important context for the coming centuries. Here, we investigate AMOC trends using an emerging set of transient simulations using multiple global climate models for the past 6,000 years. Although some models show changes, no consistent trend in overall AMOC strength during the mid-to-late Holocene emerges from the ensemble. We interpret this result to suggest no overall change in AMOC, which fits with our assessment of available proxy reconstructions. The decadal variability of the AMOC does not change in ensemble during the mid- and late-Holocene. There are interesting AMOC changes seen in the early Holocene, but their nature depends a lot on which inputs are used to drive the experiment.