"The loss, expected to happen at least once by 2050, spells the end of an entire ecosystem that has evolved for year-round ice cover. Its other effects, from disrupted weather around the globe to rising sea levels and ocean acidification, are barely beginning to be understood."

https://www.nationalobserver.com/2022/11/08/news/climate-conference-hears-loss-arctic-summer-sea-ice-now-inevitable-2050