Similar North Pacific variability despite suppressed El Niño variability in the warm mid-Pliocene climate

Oldeman, Arthur Merlijn; Baatsen, Michiel L. J.; von der Heydt, Anna S.; Selten, Frank M.; Dijkstra, Henk A.

doi:https://doi.org/10.5194/esd-15-1037-2024

Articles | Volume 15, issue 4

https://doi.org/10.5194/esd-15-1037-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/esd-15-1037-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 4

Research article

|

08 Aug 2024

Research article |

| 08 Aug 2024

Similar North Pacific variability despite suppressed El Niño variability in the warm mid-Pliocene climate

Arthur Merlijn Oldeman, Michiel L. J. Baatsen, Anna S. von der Heydt, Frank M. Selten, and Henk A. Dijkstra

Supplement

https://doi.org/10.5194/esd-15-1037-2024-supplement

Data sets

An Evaluation of the Performance of the Twentieth Century Reanalysis Version 3 (https://psl.noaa.gov/data/gridded/data.noaa.ersst.v5.html) L. C. Slivinski et al. https://doi.org/10.1175/JCLI-D-20-0505.1

CMIP6 data ESGF https://esgf-node.llnl.gov/search/cmip6/

Extended Reconstructed Sea Surface Temperature, Version 5 (ERSSTv5): Upgrades, Validations, and Intercomparisons (https://psl.noaa.gov/data/gridded/data.20thC_ReanV3.html) B. Huang et al. https://doi.org/10.1175/JCLI-D-16-0836.1

Model code and software

PlioMIP2-ENSO-teleconnection: Codes - Oldeman et al. (2024) Arthur Oldeman https://doi.org/10.5281/zenodo.10817269

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Short summary

We might be able to constrain uncertainty in future climate projections by investigating variations in the climate of the past. In this study, we investigate the interactions of climate variability between the tropical Pacific (El Niño) and the North Pacific in a warm past climate – the mid-Pliocene, a period roughly 3 million years ago. Using model simulations, we find that, although the variability in El Niño was reduced, the variability in the North Pacific atmosphere was not.