Shrinking Arctic Sea Ice Means Scorching US Summers
Scientific opinion is still divided on whether the rollicking jet stream is truly linked to climate change or may simply be the result of natural variability, according to a commentary also published today in Nature Climate Change by James Overland, a climate scientist at the National Oceanic and Atmospheric Association's Pacific Marine Environmental Laboratory in Seattle. Part of the problem comes from the paucity of data, because scientists have only 30 years of Arctic observations to use in their analysis.
"Skeptics remain unconvinced that Arctic/midlatitude linkages are proven, and this work will do little to change their viewpoint," Overland wrote. "There is insufficient data to formally resolve the debate on whether these events are purely random or if their occurrence is enhanced by Arctic changes."