The idea that "global warming" means simply that the climate in the northern hemisphere marches north by 3 miles a year over the next century is simply wrong: Stefan Rahmstorf: “Earth is anomalously warm, but North America is cold. A huge blob of icy Arctic air, usually corralled up north by the polar vortex, has escaped and moved south. You can check the data here: http://cci-reanalyzer.org/wx/DailySummary/#t2anom Is this becoming more common, and why?... Marlene Kretschmer... has just finished her PhD thesis... has found that over the last decades, the stratospheric polar vortex has become weaker and less stable, so Arctic air masses can escape more easily towards the North American and Eurasian continents...
#noted #globalwarming
