Research Article

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

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Science  01 Feb 2019:
Vol. 363, Issue 6426, pp. 516-521
DOI: 10.1126/science.aau6592

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An array of overturning data

The Atlantic meridional overturning circulation (AMOC) has a strong influence on climate, so it is important to understand how global warming may affect it. Lozier et al. report initial results from the Overturning in the Subpolar North Atlantic Program (OSNAP) (see the Perspective by Rhein). OSNAP has been measuring the flux of water transported by overturning in the high latitudes in the North Atlantic. The measurements reveal the strong variability of transport in the region and show that deep water formation in the Labrador Sea may not, as previously believed, be the major determinant of AMOC variability.

Science, this issue p. 516; see also p. 456