Some regions within the Arctic have warmed even more rapidly, with Alaska and western Canada's temperature rising by 3 to 4 °C (5.40 to 7.20 °F).
北極一些地區甚至暖化得更快，阿拉斯加州及加拿大西部的温度就上升3－4度(5.40－7.20 °F)。