The United Nations-sponsored Intergovernmental Panel on Climate Change suggested in its most recent landmark report that the region would start to see Septembers without sea ice around 2050 if humans continue to emit greenhouse gases at high or moderate levels. However, the new study, published Tuesday in Nature Communications, says this will happen even in a low-emissions scenario. Higher emissions will result in ice-free Septembers by 2030 to 2040.