Even if greenhouse gas emissions are sharply reduced, the Arctic will be ice-free in September in coming decades, causing an increase in weather extremes such as heatwaves, wildfires and floods. If emissions decline slowly or continue to rise, the first ice-free summer could be in the 2030s, a decade earlier than previous projections. Faster melting of Arctic sea ice leads to a vicious circle of more heating, because the dark ocean exposed as ice melts absorbs more heat from the sun, resulting in faster warming in the Arctic. This is weakening the jet stream, leading to more extreme weather events in North America, Europe and Asia.
www.theguardian.com/environment/2023/jun/06/too-late-now-to-save-arctic-summer-ice-climate-scientists-find