Role of paleogeography on large-scale circulation during the early Eocene

Kelemen, Fanni Dóra; Lohmann, Richard; Zhu, Jiang; Ahrens, Bodo

doi:10.5194/cp-22-505-2026

Articles | Volume 22, issue 3

https://doi.org/10.5194/cp-22-505-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-22-505-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 3

Research article

|

05 Mar 2026

Research article |

| 05 Mar 2026

Role of paleogeography on large-scale circulation during the early Eocene

Fanni Dóra Kelemen, Richard Lohmann, Jiang Zhu, and Bodo Ahrens

Data sets

CESM1.2 simulation data for the paper "Role of paleogeography on large-scale circulation during the early Eocene" Fanni D. Kelemen https://doi.org/10.5281/zenodo.17246902

CESM1.2 simulation data for "Simulation of Eocene extreme warmth and high climate sensitivity through cloud feedbacks" Jiang Zhu et al. https://doi.org/10.5281/zenodo.2642535

Short summary

The arrangement of continents and oceans strongly affects climate by shaping large-scale circulation patterns. We study, how early Eocene geography (53.5 Ma) influenced mid-latitude storms and persistent high-pressure systems, focusing on the West Siberian Sea and absent Antarctic Circumpolar Current. The climate model simulation of the early Eocene, shows a more balanced hemispheric distribution, through increased northern and decreased southern mid-latitude storm activity compared to today.