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Climate of the Past An interactive open-access journal of the European Geosciences Union
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Volume 11, issue 4
Clim. Past, 11, 687–696, 2015
https://doi.org/10.5194/cp-11-687-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Clim. Past, 11, 687–696, 2015
https://doi.org/10.5194/cp-11-687-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 21 Apr 2015

Research article | 21 Apr 2015

Subsurface North Atlantic warming as a trigger of rapid cooling events: evidence from the early Pleistocene (MIS 31–19)

I. Hernández-Almeida et al.

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Aagaard, K. and Carmack, E. C.: The role of sea ice and other fresh water in the Arctic circulation, J. Geophys. Res.-Oceans, 94, 14485–14498, https://doi.org/10.1029/JC094iC10p14485, 1989.
Alvarez-Solas, J., Charbit, S., Ritz, C., Paillard, D., Ramstein, G., and Dumas, C.: Links between ocean temperature and iceberg discharge during Heinrich events, Nature Geosci., 3, 122–126, 2010.
Alvarez-Solas, J., Charbit, S., Ramstein, G., Paillard, D., Dumas, C., Ritz, C., and Roche, D. M.: Millennial-scale oscillations in the Southern Ocean in response to atmospheric CO2 increase, Global Planet. Change, 76, 128–136, 2011.
Antonov, J. I., Locarnini, R. A., Boyer, T. P., Mishonov, A. V., and Garcia, H. E.: World Ocean Atlas 2005, Volume 2: Salinity, edited by: Levitus, S., NOAA Atlas NESDIS, 62, 182 pp., 2006.
Banderas, R., Álvarez-Solas, J., and Montoya, M.: Role of CO2 and Southern Ocean winds in glacial abrupt climate change, Clim. Past, 8, 1011–1021, https://doi.org/10.5194/cp-8-1011-2012, 2012.
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This manuscript presents new Mg/Ca and previously published δ18O measurements of Neogloboquadrina pachyderma sinistral for MIS 31-19, from a sediment core from the subpolar North Atlantic. The mechanism proposed here involves northward subsurface transport of warm and salty subtropical waters during periods of weaker AMOC, leading to ice-sheet instability and IRD discharge. This is the first time that these rapid climate oscillations are described for the early Pleistocene.
This manuscript presents new Mg/Ca and previously published δ18O measurements of...
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