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

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)516-521
Number of pages6
JournalScience
Volume363
Issue number6426
DOIs
StatePublished - Feb 1 2019

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'A sea change in our view of overturning in the subpolar North Atlantic'. Together they form a unique fingerprint.

  • Cite this

    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