4.8 Article

Current Atlantic Meridional Overturning Circulation weakest in last millennium

Journal

NATURE GEOSCIENCE
Volume 14, Issue 3, Pages 118-+

Publisher

NATURE PORTFOLIO
DOI: 10.1038/s41561-021-00699-z

Keywords

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Funding

  1. A4 project [PBA/CC/18/01]
  2. Marine Institute under the Marine Research Programme - Irish Government
  3. European Regional Development Fund
  4. UK NERC [NE/S009736/1]
  5. NERC [NE/S009736/1] Funding Source: UKRI

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Research shows that the Atlantic Meridional Overturning Circulation has undergone different stages of evolution, gradually weakening from a relatively stable period to the weakest state in recent decades.
The Atlantic Meridional Overturning Circulation (AMOC)-one of Earth's major ocean circulation systems-redistributes heat on our planet and has a major impact on climate. Here, we compare a variety of published proxy records to reconstruct the evolution of the AMOC since about AD 400. A fairly consistent picture of the AMOC emerges: after a long and relatively stable period, there was an initial weakening starting in the nineteenth century, followed by a second, more rapid, decline in the mid-twentieth century, leading to the weakest state of the AMOC occurring in recent decades.

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