late June triple-digit heat was the type that would not have happened in human civilization. And even in today’s warming world, it said, the heat was a once-in-a-millennium event.But that once-in-a-millennium event would likely occur every five to 10 years once the world warms another 1.4 degrees (0.8 degrees Celsius), said Wednesday's study from World Weather Attribution.
That much warming could be 40 or 50 years away if carbon pollution continues at its current pace, one study author said.This type of extreme heat "would go from essentially virtually impossible to relatively commonplace," said study co-author Gabriel Vecchi, a Princeton University climate scientist. "That is a huge change."The study also found that in the Pacific.