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Title: Atlantic multi-decadal oscillation covaries with Agulhas leakage

The interoceanic transfer of seawater between the Indian Ocean and the Atlantic, ‘Agulhas leakage’, forms a choke point for the overturning circulation in the global ocean. Here, by combining output from a series of high-resolution ocean and climate models with in situ and satellite observations, we construct a time series of Agulhas leakage for the period 1870–2014. The time series demonstrates the impact of Southern Hemisphere westerlies on decadal timescales. Agulhas leakage shows a correlation with the Atlantic Multi-decadal Oscillation on multi-decadal timescales; the former leading by 15 years. Lastly, this is relevant for climate in the North Atlantic.
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel (Germany)
  2. Princeton Univ., NJ (United States)
  3. Univ. of New South Wales, Sydney, NSW (Australia); Imperial College, London (United Kingdom)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. NOAA Geophysical Fluid Dynamics Lab, Princeton, NJ (United States)
Publication Date:
OSTI Identifier:
Grant/Contract Number:
SC0012457; DE130101336; 03G0835A
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2041-1723
Nature Publishing Group
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC); German Federal Ministry for Education and Research (BMBF)
Country of Publication:
United States