A continued surge in stratospheric temperatures could cause the Antarctic polar vortex to split in two for the first time in more than 20 years, which could lead to a massive increase in Antarctic temperatures and unusually hot summers in Australia and South America.
The Antarctic Vortex is a clockwise spiral that traps a current of cold air over Antarctica during the Southern Hemisphere winter. The vortex is usually very stable at this time of year, with temperatures at its center reaching…
Source: www.newscientist.com