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Atlantic multi-decadal oscillation covaries with Agulhas leakage.

ABSTRACT: The 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.

SUBMITTER: Biastoch A

PROVIDER: S-EPMC4682045 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature

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Atlantic multi-decadal oscillation covaries with Agulhas leakage.

Biastoch Arne A Durgadoo Jonathan V JV Morrison Adele K AK van Sebille Erik E Weijer Wilbert W Griffies Stephen M SM

Nature communications 20151210

The 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 correlati ...[more]

PMID: 26656850

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