Articles | Volume 12, issue 2
Clim. Past, 12, 189–200, 2016
Clim. Past, 12, 189–200, 2016

Research article 03 Feb 2016

Research article | 03 Feb 2016

A 250-year periodicity in Southern Hemisphere westerly winds over the last 2600 years

C. S. M. Turney et al.

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Cited articles

Abram, N. J., Mulvaney, R., Vimeux, F., Phipps, S. J., Turner, J., and England, M. H.: Evolution of the Southern Annular Mode during the past millennium, Nature Climate Change, 4, 564–569, 2014.
Adolphi, F., Muscheler, R., Svensson, A., Aldahan, A., Possnert, G., Beer, J., Sjolte, J., Bjorck, S., Matthes, K., and Thieblemont, R.: Persistent link between solar activity and Greenland climate during the Last Glacial Maximum, Nat. Geosci., 7, 662–666, 2014.
Ault, T. R., Deser, C., Newman, M., and Emile-Geay, J.: Characterizing decadal to centennial variability in the equatorial Pacific during the last millennium, Geophys. Res. Lett., 40, 3450–3456, 2013.
Barrow, C.: Postglacial pollen diagrams from south Georgia (sub-Antarctic) and West Falkland island (South Atlantic), J. Biogeogr., 5, 251–274, 1978.
Birnie, J. F. and Roberts, D. E.: Evidence of Tertiary forest in the Falkland Islands (Ilas Malvinas), Palaeogeogr. Palaeocl., 55, 45–53, 1986.
Short summary
Southern Hemisphere westerly airflow is considered a major driver of Southern Ocean and global climate. Observational records, however, are limited. Here we present a new Falkland Islands record that exploits "exotic" South America pollen and charcoal to reconstruct changing airflow. We find stronger winds 2000–1000 cal. yr BP, associated with increased burning, and a 250-year periodicity, suggesting solar forcing. Our results have important implications for understanding late Holocene climates.