OSNAP moves the engine room out of the Labrador Sea

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The first 21 months of OSNAP data, from August 2014 to April 2016, gave a mean overturning of 15.6 ± 0.8 Sv across OSNAP East and 2.1 ± 0.3 Sv across OSNAP West — a factor of roughly seven. Published in Science, the result contradicted the prevailing assumption that Labrador Sea convection dominates the strength and variability of subpolar overturning, and relocated most of the water-mass transformation to the Irminger and Iceland basins east of Greenland.

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Ocean CurrentsOcean

Evidence · 1

A sea change in our view of overturning in the subpolar North Atlantic

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Connections · 4

Overturning in the Subpolar North Atlantic Program (OSNAP)concerns
Labrador Seaconcerns
Atlantic Meridional Overturning Circulation (AMOC)concerns
North Atlantic Deep Water (NADW)concerns

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Observed changes · 0

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