The ocean's role in polar climate change: asymmetric Arctic and Antarctic responses to greenhouse gas and ozone forcing

  title={The ocean's role in polar climate change: asymmetric Arctic and Antarctic responses to greenhouse gas and ozone forcing},
  author={John Marshall and Kyle C. Armour and Jeffery R. Scott and Yavor Kostov and Ute Hausmann and David Ferreira and T G Shepherd and Cecilia M. Bitz},
  booktitle={Philosophical transactions. Series A, Mathematical, physical, and engineering sciences},
In recent decades, the Arctic has been warming and sea ice disappearing. By contrast, the Southern Ocean around Antarctica has been (mainly) cooling and sea-ice extent growing. We argue here that interhemispheric asymmetries in the mean ocean circulation, with sinking in the northern North Atlantic and upwelling around Antarctica, strongly influence the sea-surface temperature (SST) response to anthropogenic greenhouse gas (GHG) forcing, accelerating warming in the Arctic while delaying it in… CONTINUE READING
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