Climate of the Past
Climate of the Past
Climate of the Past
Articles | Volume 17, issue 2
Articles | Volume 17, issue 2
Clim. Past, 17, 843–867, 2021
https://doi.org/10.5194/cp-17-843-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Clim. Past, 17, 843–867, 2021
https://doi.org/10.5194/cp-17-843-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 2
Research article
 | Highlight paper
14 Apr 2021
Research article  | Highlight paper | 14 Apr 2021

Snapshots of mean ocean temperature over the last 700 000 years using noble gases in the EPICA Dome C ice core

Marcel Haeberli et al.

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Short summary
Using the temperature-dependent solubility of noble gases in ocean water, we reconstruct global mean ocean temperature (MOT) over the last 700 kyr using noble gas ratios in air enclosed in polar ice cores. Our record shows that glacial MOT was about 3 °C cooler compared to the Holocene. Interglacials before 450 kyr ago were characterized by about 1.5 °C lower MOT than the Holocene. In addition, some interglacials show transient maxima in ocean temperature related to changes in ocean circulation.
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