Articles | Volume 13, issue 3
Clim. Past, 13, 231–248, 2017
https://doi.org/10.5194/cp-13-231-2017

Special issue: Southern perspectives on climate and the environment from...

Clim. Past, 13, 231–248, 2017
https://doi.org/10.5194/cp-13-231-2017

Research article 15 Mar 2017

Research article | 15 Mar 2017

Tropical forcing of increased Southern Ocean climate variability revealed by a 140-year subantarctic temperature reconstruction

Chris S. M. Turney et al.

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Short summary
The Southern Ocean plays a fundamental role in global climate but suffers from a dearth of observational data. As the Australasian Antarctic Expedition 2013–2014 we have developed the first annually resolved temperature record using trees from subantarctic southwest Pacific (52–54˚S) to extend the climate record back to 1870. With modelling we show today's high climate variability became established in the ~1940s and likely driven by a Rossby wave response originating from the tropical Pacific.