A spatiotemporal reconstruction of sea-surface temperatures in the North Atlantic during Dansgaard–Oeschger events 5–8

Jensen, Mari F.; Nummelin, Aleksi; Nielsen, Søren B.; Sadatzki, Henrik; Sessford, Evangeline; Risebrobakken, Bjørg; Andersson, Carin; Voelker, Antje; Roberts, William H. G.; Pedro, Joel; Born, Andreas

doi:https://doi.org/10.5194/cp-14-901-2018

Articles | Volume 14, issue 6

https://doi.org/10.5194/cp-14-901-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

“Global Challenges for our Common Future: a paleoscience perspective”...

https://doi.org/10.5194/cp-14-901-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 6

Research article

|

26 Jun 2018

Research article |

| 26 Jun 2018

A spatiotemporal reconstruction of sea-surface temperatures in the North Atlantic during Dansgaard–Oeschger events 5–8

Mari F. Jensen, Aleksi Nummelin, Søren B. Nielsen, Henrik Sadatzki, Evangeline Sessford, Bjørg Risebrobakken, Carin Andersson, Antje Voelker, William H. G. Roberts, Joel Pedro, and Andreas Born

Data sets

Sea surface temperature estimates from several sediment cores in the North Atlantic M. F. Jensen, A. Nummelin, S. B. Nielsen, H. Sadatzki, E. Sessford, B. Risebrobakken, C. Andersson, A. H. L. Voelker, W. H. G. Roberts, J. B. Pedro, A. Born https://doi.org/10.1594/PANGAEA.882403

Sea surface temperature anomalies in the North Atlantic, 30-40ka, from the proxy surrogate reconstruction method M. F. Jensen, A. Nummelin, S. B. Nielsen, H. Sadatzki, E. Sessford, B. Risebrobakken, C. Andersson, A. H. L. Voelker, W. H. G. Roberts, J. B. Pedro, A. Born https://doi.org/10.1594/PANGAEA.890920

Short summary

We combine North Atlantic sea-surface temperature reconstructions and global climate model simulations to study rapid glacial climate shifts (30–40 000 years ago). Pre-industrial climate boosts similar, albeit weaker, sea-surface temperature variability as the glacial period. However, in order to reproduce most of the amplitude of this variability, and to see temperature variability in Greenland similar to the ice-core record, although with a smaller amplitude, we need forced simulations.