Reduced interdecadal variability of Atlantic Meridional Overturning Circulation under global warming
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
i


Reduced interdecadal variability of Atlantic Meridional Overturning Circulation under global warming
  • Published Date:

    2016

  • Source:
    Proc Natl Acad Sci U S A. 2016 Mar 22; 113(12): 3175-3178.
Filetype[PDF-795.69 KB]


Details:
  • Description:
    Interdecadal variability of the Atlantic Meridional Overturning Circulation (AMOC-IV) plays an important role in climate variation and has significant societal impacts. Past climate reconstruction indicates that AMOC-IV has likely undergone significant changes. Despite some previous studies, responses of AMOC-IV to global warming remain unclear, in particular regarding its amplitude and time scale. In this study, we analyze the responses of AMOC-IV under various scenarios of future global warming in multiple models and find that AMOC-IV becomes weaker and shorter with enhanced global warming. From the present climate condition to the strongest future warming scenario, on average, the major period of AMOC-IV is shortened from ∼50 y to ∼20 y, and the amplitude is reduced by ∼60%. These reductions in period and amplitude of AMOC-IV are suggested to be associated with increased oceanic stratification under global warming and, in turn, the speedup of oceanic baroclinic Rossby waves.
  • Pubmed Central ID:
    PMC4812739
  • Document Type:
  • Main Document Checksum:
  • File Type: