A sea change in our view of overturning in the sub polar North Atlantic

M. Susan Lozier; Feili Li; Sheldon Bacon; F Bahr; Amy S. Bower; Stuart Cunningham; M. Femke de Jong; Laura de Steur; Brad deYoung; Jürgen Fischer; Stefan Gary; Blair J.W. Greenan; N.P. Holliday; A Houk; Loic Houpert; Mark Inall; William Johns; Clare Louise Johnson; Johannes Karstensen; g koman; I.A. Le Bras; X Lin; Neill Mackay; David Marshall; Herlé Mercier; M Oltmans; Robert S. Pickart; A.L. Ramsey; D. Rayner; Fiammetta Straneo; Virginie Thierry; D.J. Torres; R. Williams; C. Wilson; J. Yang; I Yashayaev; J. Zhao

doi:10.1126/science.aau6592

A sea change in our view of overturning in the sub polar North Atlantic

M. Susan Lozier
, Feili Li
, Sheldon Bacon
, F Bahr
, Amy S. Bower
, Stuart Cunningham
, M. Femke de Jong
, Laura de Steur
, Brad deYoung
, Jürgen Fischer
, Stefan Gary
, Blair J.W. Greenan
, N.P. Holliday
, A Houk
, Loic Houpert
, Mark Inall
, William Johns
, Clare Louise Johnson
, Johannes Karstensen
, g koman

I.A. Le Bras, X Lin, Neill Mackay, David Marshall, Herlé Mercier, M Oltmans, Robert S. Pickart, A.L. Ramsey, D. Rayner, Fiammetta Straneo, Virginie Thierry, D.J. Torres, R. Williams, C. Wilson, J. Yang, I Yashayaev, J. Zhao

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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.

Originalsprache	English
Seiten (von - bis)	516-521
Seitenumfang	6
Fachzeitschrift	Science
Jahrgang	363
Ausgabenummer	6426
DOIs	https://doi.org/10.1126/science.aau6592
Publikationsstatus	Published - 1 Feb. 2019

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http://science.sciencemag.org/content/363/6426/516?ijkey=9c91553330612279b6ac89814961b790b495650a&keytype2=tf_ipsecshaLizenz: Other

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

@article{71d3f99c586346018adac3e63fe5a7c3,

title = "A sea change in our view of overturning in the sub polar North Atlantic",

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. ",

keywords = "7ref2021",

author = "Lozier, \{M. Susan\} and Feili Li and Sheldon Bacon and F Bahr and Bower, \{Amy S.\} and Stuart Cunningham and \{de Jong\}, \{M. Femke\} and \{de Steur\}, Laura and Brad deYoung and J{\"u}rgen Fischer and Stefan Gary and Greenan, \{Blair J.W.\} and N.P. Holliday and A Houk and Loic Houpert and Mark Inall and William Johns and Johnson, \{Clare Louise\} and Johannes Karstensen and g koman and \{Le Bras\}, I.A. and X Lin and Neill Mackay and David Marshall and Herl{\'e} Mercier and M Oltmans and Pickart, \{Robert S.\} and A.L. Ramsey and D. Rayner and Fiammetta Straneo and Virginie Thierry and D.J. Torres and R. Williams and C. Wilson and J. Yang and I Yashayaev and J. Zhao",

note = "Copyright {\textcopyright} 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science.",

year = "2019",

month = feb,

day = "1",

doi = "10.1126/science.aau6592",

language = "English",

volume = "363",

pages = "516--521",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "6426",

}

Lozier, MS, Li, F, Bacon, S, Bahr, F, Bower, AS, Cunningham, S, de Jong, MF, de Steur, L, deYoung, B, Fischer, J, Gary, S, Greenan, BJW, Holliday, NP, Houk, A, Houpert, L, Inall, M, Johns, W, Johnson, CL, Karstensen, J, koman, G, Le Bras, IA, Lin, X, Mackay, N, Marshall, D, Mercier, H, Oltmans, M, Pickart, RS, Ramsey, AL, Rayner, D, Straneo, F, Thierry, V, Torres, DJ, Williams, R, Wilson, C, Yang, J, Yashayaev, I & Zhao, J 2019, 'A sea change in our view of overturning in the sub polar North Atlantic', Science, Jg. 363, Nr. 6426, S. 516-521. https://doi.org/10.1126/science.aau6592

TY - JOUR

T1 - A sea change in our view of overturning in the sub polar North Atlantic

AU - Lozier, M. Susan

AU - Li, Feili

AU - Bacon, Sheldon

AU - Bahr, F

AU - Bower, Amy S.

AU - Cunningham, Stuart

AU - de Jong, M. Femke

AU - de Steur, Laura

AU - deYoung, Brad

AU - Fischer, Jürgen

AU - Gary, Stefan

AU - Greenan, Blair J.W.

AU - Holliday, N.P.

AU - Houk, A

AU - Houpert, Loic

AU - Inall, Mark

AU - Johns, William

AU - Johnson, Clare Louise

AU - Karstensen, Johannes

AU - koman, g

AU - Le Bras, I.A.

AU - Lin, X

AU - Mackay, Neill

AU - Marshall, David

AU - Mercier, Herlé

AU - Oltmans, M

AU - Pickart, Robert S.

AU - Ramsey, A.L.

AU - Rayner, D.

AU - Straneo, Fiammetta

AU - Thierry, Virginie

AU - Torres, D.J.

AU - Williams, R.

AU - Wilson, C.

AU - Yang, J.

AU - Yashayaev, I

AU - Zhao, J.

PY - 2019/2/1

Y1 - 2019/2/1

N2 - 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.

AB - 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.

KW - 7ref2021

U2 - 10.1126/science.aau6592

DO - 10.1126/science.aau6592

M3 - Article

SN - 0036-8075

VL - 363

SP - 516

EP - 521

JO - Science

JF - Science

IS - 6426

ER -

A sea change in our view of overturning in the sub polar North Atlantic

Abstract

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