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

M. S. Lozier; F. Li; S. Bacon; F. Bahr; A. S. Bower; S. A. Cunningham; M. F. De Jong; L. De Steur; B. DeYoung; J. Fischer; S. F. Gary; B. J.W. Greenan; N. P. Holliday; A. Houk; L. Houpert; M. E. Inall; W. E. Johns; H. L. Johnson; C. Johnson; J. Karstensen; G. Koman; I. A. Le Bras; X. Lin; N. Mackay; D. P. Marshall; H. Mercier; M. Oltmanns; R. S. Pickart; A. L. Ramsey; D. Rayner; F. Straneo; V. Thierry; D. J. Torres; R. G. Williams; C. Wilson; J. Yang; I. Yashayaev; J. Zhao

doi:10.1126/science.aau6592

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

M. S. Lozier, F. Li, S. Bacon, F. Bahr, A. S. Bower, S. A. Cunningham, M. F. De Jong, L. De Steur, B. DeYoung, J. Fischer, S. F. Gary, B. J.W. Greenan, N. P. Holliday, A. Houk, L. Houpert, M. E. Inall, W. E. Johns, H. L. Johnson, C. Johnson, J. KarstensenG. Koman, I. A. Le Bras, X. Lin, N. Mackay, D. P. Marshall, H. Mercier, M. Oltmanns, R. S. Pickart, A. L. Ramsey, D. Rayner, F. Straneo, V. Thierry, D. J. Torres, R. G. Williams, C. Wilson, J. Yang, I. Yashayaev, J. Zhao

Ocean Sciences

Research output: Contribution to journal › Article

65 Scopus citations

Abstract

To provide an observational basis for the Intergovernmental Panel on Climate Change projections of a slowing Atlantic meridional overturning circulation (MOC) in the 21st century, the Overturning in the Subpolar North Atlantic Program (OSNAP) observing system was launched in the summer of 2014. The first 21-month record reveals a highly variable overturning circulation responsible for the majority of the heat and freshwater transport across the OSNAP line. In a departure from the prevailing view that changes in deep water formation in the Labrador Sea dominate MOC variability, these results suggest that the conversion of warm, salty, shallow Atlantic waters into colder, fresher, deep waters that move southward in the Irminger and Iceland basins is largely responsible for overturning and its variability in the subpolar basin.

Original language	English (US)
Pages (from-to)	516-521
Number of pages	6
Journal	Science
Volume	363
Issue number	6426
DOIs	https://doi.org/10.1126/science.aau6592
State	Published - Feb 1 2019

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Lozier, M. S., Li, F., Bacon, S., Bahr, F., Bower, A. S., Cunningham, S. A., De Jong, M. F., De Steur, L., DeYoung, B., Fischer, J., Gary, S. F., Greenan, B. J. W., Holliday, N. P., Houk, A., Houpert, L., Inall, M. E., Johns, W. E., Johnson, H. L., Johnson, C., ... Zhao, J. (2019). A sea change in our view of overturning in the subpolar North Atlantic. Science, 363(6426), 516-521. https://doi.org/10.1126/science.aau6592

A sea change in our view of overturning in the subpolar North Atlantic. / Lozier, M. S.; Li, F.; Bacon, S.; Bahr, F.; Bower, A. S.; Cunningham, S. A.; De Jong, M. F.; De Steur, L.; DeYoung, B.; Fischer, J.; Gary, S. F.; Greenan, B. J.W.; Holliday, N. P.; Houk, A.; Houpert, L.; Inall, M. E.; Johns, W. E.; Johnson, H. L.; Johnson, C.; Karstensen, J.; Koman, G.; Le Bras, I. A.; Lin, X.; Mackay, N.; Marshall, D. P.; Mercier, H.; Oltmanns, M.; Pickart, R. S.; Ramsey, A. L.; Rayner, D.; Straneo, F.; Thierry, V.; Torres, D. J.; Williams, R. G.; Wilson, C.; Yang, J.; Yashayaev, I.; Zhao, J.

In: Science, Vol. 363, No. 6426, 01.02.2019, p. 516-521.

Research output: Contribution to journal › Article

Lozier, MS, Li, F, Bacon, S, Bahr, F, Bower, AS, Cunningham, SA, De Jong, MF, De Steur, L, DeYoung, B, Fischer, J, Gary, SF, Greenan, BJW, Holliday, NP, Houk, A, Houpert, L, Inall, ME, Johns, WE, Johnson, HL, Johnson, C, Karstensen, J, Koman, G, Le Bras, IA, Lin, X, Mackay, N, Marshall, DP, Mercier, H, Oltmanns, M, Pickart, RS, Ramsey, AL, Rayner, D, Straneo, F, Thierry, V, Torres, DJ, Williams, RG, Wilson, C, Yang, J, Yashayaev, I & Zhao, J 2019, 'A sea change in our view of overturning in the subpolar North Atlantic', Science, vol. 363, no. 6426, pp. 516-521. https://doi.org/10.1126/science.aau6592

Lozier, M. S. ; Li, F. ; Bacon, S. ; Bahr, F. ; Bower, A. S. ; Cunningham, S. A. ; De Jong, M. F. ; De Steur, L. ; DeYoung, B. ; Fischer, J. ; Gary, S. F. ; Greenan, B. J.W. ; Holliday, N. P. ; Houk, A. ; Houpert, L. ; Inall, M. E. ; Johns, W. E. ; Johnson, H. L. ; Johnson, C. ; Karstensen, J. ; Koman, G. ; Le Bras, I. A. ; Lin, X. ; Mackay, N. ; Marshall, D. P. ; Mercier, H. ; Oltmanns, M. ; Pickart, R. S. ; Ramsey, A. L. ; Rayner, D. ; Straneo, F. ; Thierry, V. ; Torres, D. J. ; Williams, R. G. ; Wilson, C. ; Yang, J. ; Yashayaev, I. ; Zhao, J. / A sea change in our view of overturning in the subpolar North Atlantic. In: Science. 2019 ; Vol. 363, No. 6426. pp. 516-521.

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abstract = "To provide an observational basis for the Intergovernmental Panel on Climate Change projections of a slowing Atlantic meridional overturning circulation (MOC) in the 21st century, the Overturning in the Subpolar North Atlantic Program (OSNAP) observing system was launched in the summer of 2014. The first 21-month record reveals a highly variable overturning circulation responsible for the majority of the heat and freshwater transport across the OSNAP line. In a departure from the prevailing view that changes in deep water formation in the Labrador Sea dominate MOC variability, these results suggest that the conversion of warm, salty, shallow Atlantic waters into colder, fresher, deep waters that move southward in the Irminger and Iceland basins is largely responsible for overturning and its variability in the subpolar basin.",

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AU - Straneo, F.

AU - Thierry, V.

AU - Torres, D. J.

AU - Williams, R. G.

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