Global surface warming enhanced by weak Atlantic overturning circulation

Palaeoceanographic records indicate that abrupt cooling of Northern Hemisphere during deglacial periods are linked to weakening of the Atlantic Meridional Overturning Circulation (AMOC). However, a  new article published in Nature argues that during a weak state of the AMOC, ocean heat is released to the atmosphere increasing the global surface temperature. This study further suggests that during an accelerating phase from the mid-1990s to the early 2000s, the AMOC stored a massive amount of heat in the ocean, contributing to the global-warming slowdown.

https://www.nature.com/articles/s41586-018-0320-y

http://www.realclimate.org/index.php/archives/2018/07/does-a-slow-amoc-increase-the-rate-of-global-warming/

https://www.sciencedaily.com/releases/2018/07/180718131128.htm

 

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