Climate of the Past
Climate of the Past
CP
Articles | Volume 22, issue 4
Articles | Volume 22, issue 4
https://doi.org/10.5194/cp-22-845-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-22-845-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 4
Research article
 | 
20 Apr 2026
Research article |  | 20 Apr 2026

Climate and ocean circulation changes toward a modern snowball Earth

Takashi Obase, Takanori Kodama, Takao Kawasaki, Sam Sherriff-Tadano, Daisuke Takasuka, Ayako Abe-Ouchi, and Masakazu Fujii

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Short summary
In the past, Earth might have experienced its surface completely covered with ice. Using an atmosphere-ocean climate model, we examined the evolution in the ocean circulation from modern to the snowball Earth. We found that the deep ocean ocean circulation experienced drastic weakening before the snowball onset by salinity changes, and after that the ocean circulation resumed. The ocean circulation changes have implications for understanding climate system feedback on the past snowball events.
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