The effect could be down to the way decreasing stratospheric ozone and rising greenhouse gases are altering the radiation balance of the Earth's atmosphere.
This has been predicted to alter and strengthen the westerly winds that blow over the Southern Ocean.
"We expected this transition to a windier regime, but it has occurred much earlier than we thought, seemingly because of the ozone hole," said Lenton.
"This result illustrates how complex the chain of cause and effect can be in the Earth system. No one would ever have predicted from first principles that increasing CFCs would have the effect of decreasing uptake of ocean carbon dioxide," said Watson.
Source-ANI
TAN