Impact of mid-glacial ice sheets on deep ocean circulation and global climate

Sherriff-Tadano, Sam; Abe-Ouchi, Ayako; Oka, Akira

doi:https://doi.org/10.5194/cp-17-95-2021

Articles | Volume 17, issue 1

https://doi.org/10.5194/cp-17-95-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-17-95-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 1

Research article

|

12 Jan 2021

Research article |

| 12 Jan 2021

Impact of mid-glacial ice sheets on deep ocean circulation and global climate

Sam Sherriff-Tadano, Ayako Abe-Ouchi, and Akira Oka

Supplement

https://doi.org/10.5194/cp-17-95-2021-supplement

Data sets

Data repository S. Sherriff-Tadano https://ccsr.aori.u-tokyo.ac.jp/~tadano/

Short summary

We perform simulations of Marine Isotope Stage 3 and 5a with an atmosphere–ocean general circulation model to explore the effect of the southward expansion of mid-glacial ice sheets on the Atlantic Meridional Overturning Circulation (AMOC) and climate. We find that the southward expansion of the mid-glacial ice sheet causes a surface cooling over the North Atlantic and Southern Ocean, but it exerts a small impact on the AMOC due to the competing effects of surface wind and surface cooling.