Arctic Ocean may be ice-free for part of year by 2044, finds study
The HinduHuman-caused climate change is on track to make the Arctic Ocean functionally ice-free for part of each year starting sometime between 2044 and 2067, according to a study. Satellite observations show that since 1979, the amount of sea ice in the Arctic in September — the month when there is the least sea ice, before water starts freezing again — has declined by 13% per decade, the researchers said. The study’s lead author, Chad Thackeray, an assistant researcher at UCLA, said one reason predictions about sea ice loss diverge so much is that they differ in how they consider a process called sea ice albedo feedback. Thackeray and co-author Alex Hall, a UCLA professor, noted that sea ice albedo feedback not only happens over long periods of time due to climate change, but also happens every summer when sea ice melts for the season. “Arctic sea ice is a key component of the earth system because of its highly reflective nature, which keeps the global climate relatively cool,” Thackeray said.