Cited by 117Climate variability and modelsOceanographic and Atmospheric ProcessesGeology and Paleoclimatology Research

Atlantic Multidecadal Variability and the U.K. ACSIS Program

Open access
Sutton, R. T., McCarthy, G. D., Robson, J., Sinha, B., Archibald, A. T., Gray, L. J.·2018·Bulletin of the American Meteorological Society

Abstract

Atlantic multidecadal variability (AMV) is the term used to describe the pattern of variability in North Atlantic sea surface temperatures (SSTs) that is characterized by decades of basinwide warm or cool anomalies, relative to the global mean. AMV has been associated with numerous climate impacts in many regions of the world including decadal variations in temperature and rainfall patterns, hurricane activity, and sea level changes. Given its importance, understanding the physical processes that drive AMV and the extent to which its evolution is predictable is a key challenge in climate science. A leading hypothesis is that natural variations in ocean circulation control changes in ocean heat content and consequently AMV phases. However, this view has been challenged recently by claims that changing natural and anthropogenic radiative forcings are critical drivers of AMV. Others have argued that changes in ocean circulation are not required. Here, we review the leading hypotheses and mechanisms for AMV and discuss the key debates. In particular, we highlight the need for a holistic understanding of AMV. This perspective is a key motivation for a major new U.K. research program: the North Atlantic Climate System Integrated Study (ACSIS), which brings together seven of the United Kingdom’s leading environmental research institutes to enable a broad spectrum approach to the challenges of AMV. ACSIS will deliver the first fully integrated assessment of recent decadal changes in the North Atlantic, will investigate the attribution of these changes to their proximal and ultimate causes, and will assess the potential to predict future changes.

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Crossref · 10.1175/bams-d-16-0266.1

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  • The AMV region shows a step change in the SSTA centred on 1995, corresponding to the change to a positive phase of the AMV.

    “The AMV region shows a step change in the SSTA centred on 1995, corresponding to the change to a positive phase of the AMV30.”

    From Tendencies, variability and persistence of sea surface temperature anomalies (2020) · cites this paper as [30]

    The 'Observed Characteristics of AMV' section (page unavailable) places the cool phase at approximately 1965–95 and the warm phase from 2000 onward, and explicitly describes a 1990s shift to positive AMV. It does not describe a step change in sea-surface-temperature anomalies centred on 1995, so that characterization is not established by the text. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Changes in the AMV are coupled with the North Atlantic Oscillation and Atlantic Meridional Overturning Circulation (AMOC), with a positive phase of the AMV associated with warmer SSTs.

    “Changes in the AMV are coupled with the North Atlantic Oscillation and Atlantic Meridional Overturning Circulation (AMOC), with a positive phase of the AMV associated with warmer SSTs30.”

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Cites

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Research works printed but not linked: 5

  1. Freeland, H. J., and Coauthors, 2010: Argo-A decade of progress. Proc. OceanObs'09: Sustained Ocean Observations and Information for Society, Vol. 2, ESA Special Publication WPP-306, Venice, Italy, European Space Agency, 357-370.
  2. Hunke, E., and W. Lipscomb, 2008: CICE: The Los Alamos Sea Ice Model. Documentation and software, version 4.0. Los Alamos National Laboratory Tech. Rep. LA-CC-06-012, 73 pp. · DOI
  3. Kirtman, B. P., T. Stockdale, and R. Burgman, 2013: The ocean's role in modeling and predicting seasonal-to- interannual climate variations. Ocean Circulation and Climate: A 21st Century Perspective, G. Siedler et al., Eds., International Geophysics Series, Vol. 103, Academic Press, 625-644. · DOI
  4. Landsea, C. W., and Coauthors, 2004: The Atlantic hur- ricane database re-analysis project: Documentation for the 1851-1910 alterations and additions to the HURDAT database. Hurricanes and Typhoons: Past, Present and Future, R. J. Murname and K.-B. Liu, Eds., Columbia University Press, 177-221.
  5. Madec, G., 2008: NEMO ocean engine. Institut Pierre- Simon Laplace Note du Pole de Modélisation 27, 300 pp. · DOI

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Authors
Sutton, R. T., McCarthy, G. D., Robson, J., Sinha, B., Archibald, A. T., & Gray, L. J.
Affiliations
  • National University of Ireland, Maynooth (IE)
  • National Centre for Atmospheric Science (GB)
  • National Oceanography Centre (GB)
  • University of Oxford (GB)
Corresponding author
  • Sutton, R. T.
  • McCarthy, G. D.
  • Archibald, A. T.
Venue
Bulletin of the American Meteorological Society
Published
2018-02-01
Volume
99
Issue
2
Pages
415-425
ISSN
  • 0003-0007 (ISSN-L)
  • 1520-0477
OpenAlex
W2736014213
Cited by
117
References
46
Citations by year
2026: 5 · 2025: 7 · 2024: 11 · 2023: 18 · 2022: 18 · 2021: 20 · 2020: 17 · 2019: 16 · 2018: 4
FWCI
7.01
Type
journal article
Language
en
Open access
Locations
  • Bulletin of the American Meteorological Society (publishedVersion)
  • Maynooth University ePrints and eTheses Archive (Maynooth University) (acceptedVersion)
  • ePrints Soton (University of Southampton) (acceptedVersion)
  • NERC Open Research Archive (Natural Environment Research Council) (acceptedVersion)
  • CentAUR (University of Reading) (submittedVersion)
  • Apollo (University of Cambridge) (submittedVersion)
  • Apollo
Funders
Natural Environment Research Council (ncas10009, NE/P006779/1, NE/N018044/1, NE/N018028/1, noc010010, NE/N006038/1, noc010012, NE/N010965/1, NE/N006054/1, NE/N018001/1)
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
Keywords
Atlantic Multidecadal Oscillation, North Atlantic sea surface temperature, ocean circulation, ocean heat content, radiative forcing, climate change attribution, decadal variability, climate predictability, Atlantic meridional overturning circulation

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