Changes in the global temperature have been incremental – and anything but uniform, according to an analysis of temperature data from government satellites.
Overall, the world temperature has increased 0.91 degrees Fahrenheit in the 36-year dataset, said John Christy, the University of Alabama scientist who is a keeper of the data.
But the Northern Hemisphere, with a far greater land mass, has warmed at double the rate of the Southern Hemisphere, which has far greater ocean coverage.
As Christy explained, lands would responde more quickly to a warming than the oceans.
Of significance is the rapid warming in the Arctic, where temperatures were up over 3 degrees in the satellite period, and ice-freed water has been interacting with the atmosphere..
By contrast, temperatures dropped in Antarctic regions.