The Stability of the Greenland Ice Sheet

格陵兰冰盖的稳定性对未来海平面可能上升具有重要影响。最近的观测数据表明，格陵兰岛的质量损失加速，从而导致全球海平面上升。然而，对于未来的趋势可能是什么，还没有达成共识。因此，迫切需要确定解决格陵兰冰盖稳定性问题的优先事项。为举办格陵兰冰盖稳定性讲习班提供了资金。将召集一个专家社区，评估格陵兰冰盖历史知识的现状和对气候强迫的敏感性。该小组还将提出关键的研究优先事项，以促进格陵兰冰盖稳定性问题的牵引力。增进对格陵兰冰盖历史、相关过程及其可能的未来的了解，将显著影响我们预测和减缓海平面上升的能力。讲习班将保证性别和年龄的多样性，从而确保向参加讲习班的国家和国际社会介绍新成员。了解冰盖的稳定性对于了解和预测海平面上升很重要。然而，我们目前还没有数据或模型，可以对过去的冰盖变化有一个明确的共识看法，更不用说未来了。最近对宇宙成因同位素的测量要求更新世大部分地区的GISP2顶端钻探现场没有冰。另一方面，来自格陵兰岛中部其他冰芯和近海沉积物记录的新的和公布的数据被解释为冰盖持续到上更新世。虽然数值冰盖模拟显示，在最后一次间冰期期间，格陵兰冰盖较小，但相对完整，但来自冰川动力学社区的新发现揭示了可能导致格陵兰大陆冰崩溃的过程。因此，讲习班将侧重于评估和协调对四个重要分学科--冰芯、地层记录、冰盖模拟和冰盖过程--的知识和理解状况。

The stability of the Greenland Ice Sheet has important implications for possible future sea level rise. Recent observational data suggest an acceleration of mass loss, and consequent global sea level rise, from Greenland. There is, though, no consensus on what future trends may be. Thus, there is urgency in defining priorities for addressing the Greenland Ice Sheet stability problem. Funds are provided for a workshop on the stability of the Greenland Ice Sheet. A community of experts will be assembled to assess the current state of knowledge of Greenland Ice Sheet history and sensitivity to climate forcing. The group also will suggest key research priorities that would promote traction on the problem of Greenland Ice Sheet stability. Improved understanding of Greenland Ice Sheet history, the associated processes, and its possible future will significantly impact our ability to predict and mitigate sea level rise. The workshop will guarantee gender and age diversity, thus ensuring the introduction of new members to the national and international community represented at the workshop. Understanding ice sheet stability is important for understanding and projecting sea level rise. However, we do not currently have data or models that allow for a definitive consensus view of ice sheet variability during the past, much less the future. Recent measurements of cosmogenic isotopes demand the absence of ice at the GISP2 summit drill site for significant portions of the Pleistocene. On the other hand, new and published data from other ice cores in central Greenland and from offshore sediment records have been interpreted to suggest persistence of the ice sheet through the Plio-Pleistocene. While numerical ice sheet simulations reveal a smaller, but relatively intact Greenland Ice Sheet during the Last Interglaciation, new discoveries from the glacial dynamics community reveal processes that could lead to the collapse of continental ice in Greenland. Thus, the workshop will focus on assessing and reconciling the state of knowledge and understanding of four important sub-disciplines - ice coring, stratigraphic records, ice sheet modeling, and ice sheet processes.