Cited by 97Oceanographic and Atmospheric ProcessesClimate variability and modelsMarine and coastal ecosystems

Observation of decadal change in the Atlantic meridional overturning circulation using 10 years of continuous transport data: DECADAL ATLANTIC MOC OBSERVATIONS

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Send, Uwe, Lankhorst, Matthias, Kanzow, Torsten·2011·Geophysical Research Letters

Abstract

[1] The meridional overturning circulation (MOC) represents the main mechanism for the oceanic northward heat transport in the Atlantic, and fluctuations of this circulation are believed to have major impacts on northern hemisphere climate. While numerical ocean and climate models and paleo-records show large variability in this circulation, the use of direct observations of the MOC for detecting climate-timescale changes has proven difficult so far. This report presents the first observational record of MOC measurements that is continuous and sufficiently long to exhibit decadal-scale changes, here a decrease by 20% over the observational period (Jan. 2000–June 2009) and large interannual changes in the flow and its vertical structure. Data are from a mooring array at 16°N (Meridional Overturning Variability Experiment, MOVE). The observed change agrees with the amplitude of multi-decadal natural fluctuations seen in numerical ocean and climate models. Knowledge of the existence and phasing of such internal cycles provides multi-decadal climate predictability. Recently, some numerical model simulations have produced results that show a weakening of the MOC since the 1990's and observational confirmation of this now is a high priority.

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Crossref · 10.1029/2011gl049801

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  • Since 2000, a mooring array has been maintained at 16N that includes velocity measurements covering the DWBC east of Guadeloupe and additional geostrophic moorings measuring the deep flow between the continental slope and the mid-Atlantic ridge.

    “Since 2000, a mooring array has been maintained at 16 • N that includes velocity measurements covering the DWBC east of Guadeloupe and additional geostrophic moorings measuring the deep flow between the continental slope and the mid-Atlantic ridge (Send et al., 2011;Frajka-Williams et al., 2018).”

    From The tropical atlantic observing system (2019) · cites this paper as Send et al., 2011

    The Observations section describes a nearly 10-year continuous MOVE mooring record at 16°N, with current-meter measurements near the continental slope and geostrophic measurements across a 1000 km section. The Figure 1 caption places the moorings between the coast and Mid-Atlantic Ridge and depicts the deep western boundary current. Our copy does not explicitly establish the exact start year of 2000 or locate the boundary-current measurements east of Guadeloupe; page numbers were not available. (LLM, conf=0.82)

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Authors
Send, U., Lankhorst, M., & Kanzow, T.
Affiliations
  • Scripps Institution of Oceanography (US)
  • GEOMAR Helmholtz Centre for Ocean Research Kiel (DE)
Venue
Geophysical Research Letters
Published
2011-12-24
Volume
38
Issue
24
Pages
n/a-n/a
ISSN
0094-8276 (ISSN-L)
OpenAlex
W1607852544
Cited by
97
References
23
Citations by year
2026: 4 · 2025: 6 · 2024: 2 · 2023: 5 · 2022: 7 · 2021: 15 · 2020: 7 · 2019: 7 · 2018: 7 · 2017: 6 · 2016: 3 · 2015: 11 · 2014: 4 · 2013: 10 · 2012: 2
FWCI
3.61
Type
journal article
Language
en
Open access
Locations
  • Geophysical Research Letters (publishedVersion, cc-by)
  • Helmholtz Centre for Ocean Research Kiel (GEOMAR) (acceptedVersion, other-oa)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
Keywords
Atlantic meridional overturning circulation, decadal variability, mooring array, interannual variability, multidecadal variability, ocean heat transport, climate predictability

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