permafrost 永久凍土

permafrost
繁：永久凍土
简：永久冻土

此外，永久凍土也不斷融化，可能釋出更多甲烷、二氧化碳等的溫室氣體，加劇氣候變化。報告稱如果全球能限制溫升於 2°C 以內， 2100 年僅有約四分之一近地表永久凍土會融化，但持續增加排放碳，將會有七成永久凍土會融化。

IPCC 海洋和冰雪圈特別報告：各國越早果斷行動　人類越能應對氣候變化（2019年9月25日）。立場新聞，取自https://bit.ly/2oGIcQN

One of the most worrying alarms sounded by the IPCC report is about melting tundra and increasing wildfires in northern latitudes: “Widespread permafrost thaw is projected for this century and beyond.” A quarter is already near certain to melt, it said, and 70% or more would go if emissions are not curbed.

Extreme sea level events ‘will hit once a year by 2050’. (2019, September 25). The Guardian. Retrieved from https://www.theguardian.com/environment/2019/sep/25/extreme-sea-level-events-will-hit-once-a-year-by-2050