Turney, C. S. M. and Jones, R. T. 2010. Does the Agulhas Current amplify global temperatures during super-interglacials? J. Quaternary Sci., Vol. 25 pp. 839–843. ISSN 0267-8179.
Does the Agulhas Current amplify global temperatures during super-interglacials?†
Version of Record online: 25 AUG 2010
Copyright © 2010 John Wiley & Sons, Ltd.
Journal of Quaternary Science
Volume 25, Issue 6, pages 839–843, September 2010
How to Cite
Turney, C. S.M. and Jones, R. T. (2010), Does the Agulhas Current amplify global temperatures during super-interglacials?. J. Quaternary Sci., 25: 839–843. doi: 10.1002/jqs.1423
- Issue online: 25 AUG 2010
- Version of Record online: 25 AUG 2010
- abrupt future climate change;
- El Niño–Southern Oscillation (ENSO);
- Southern Ocean;
- Southern Hemisphere westerlies;
- thermohaline circulation
Future projections of climate suggest our planet is moving into a ‘super-interglacial’. Here we report a global synthesis of ice, marine and terrestrial data from a recent palaeoclimate equivalent, the Last Interglacial (ca. 130–116 ka ago). Our analysis suggests global temperatures were on average ∼1.5°C higher than today (relative to the AD 1961–1990 period). Intriguingly, we identify several Indian Ocean Last Interglacial sequences that suggest persistent early warming, consistent with leakage of warm, saline waters from the Agulhas Current into the Atlantic, intensifying meridional ocean circulation and increasing global temperatures. This mechanism may have played a significant positive feedback role during super-interglacials and could become increasingly important in the future. These results provide an important insight into a future 2°C climate stabilisation scenario. Copyright © 2010 John Wiley & Sons, Ltd.