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总结
一项关于格陵兰北部Prudhoe Dome冰帽的新研究指出，该冰帽在约7000年前曾在自然增温阶段完全消失。研究人员依据冰盖下方沉积物与地层等古气候证据重建过去融化历史，认为当时的温度条件与未来可能出现的变暖幅度存在可比性。这意味着该区域冰体对升温更敏感，在持续变暖背景下可能再次显著退缩，进而增加对未来海平面上升评估的不确定性，并提示需更细化地纳入区域地形与冰体动力学因素。
正文
Greenland's Prudhoe Dome ice cap was completely gone only 7,000 years ago, study finds Phys.org Scientists just got some ancient clues about future sea-level rise - and it's bad news The Washington Post Northern Greenland ice dome melted before and could melt again New Scientist What lies beneath Greenland could change what we know about rising seas PreventionWeb.net Study: Northern Greenland ice dome melted in past under similar future warmth Yeni Safak English
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