Southern seas are sucking up more heat

摘要

It's worse than we thought. The oceans of the southern hemisphere may have been sucking up more than twice as much of the heat trapped by our excess greenhouse gases than previously calculated. If this is true, we have underestimated the extent to which the world has been warming. Paul Durack from the Lawrence Livermore National Laboratory in California and his colleagues have compared direct and satellite sea temperature measurements with the results of climate models. Examining these three types of figures together suggests that our estimates of northern hemisphere ocean warming are about right, but a different story emerged for down south.