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Nature Research, Nature Communications, 1(6), 2015

DOI: 10.1038/ncomms10082

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Atlantic multi-decadal oscillation covaries with Agulhas leakage

Journal article published in 2015 by Arne Biastoch ORCID, Jonathan V. Durgadoo ORCID, Adele K. Morrison, Erik van Sebille ORCID, Wilbert Weijer ORCID, Stephen M. Griffies
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

AbstractThe interoceanic transfer of seawater between the Indian Ocean and the Atlantic, ‘Agulhas leakage’, forms a choke point for the overturning circulation in the global ocean. Here, by combining output from a series of high-resolution ocean and climate models with in situ and satellite observations, we construct a time series of Agulhas leakage for the period 1870–2014. The time series demonstrates the impact of Southern Hemisphere westerlies on decadal timescales. Agulhas leakage shows a correlation with the Atlantic Multi-decadal Oscillation on multi-decadal timescales; the former leading by 15 years. This is relevant for climate in the North Atlantic.