Greenland ice marginal lake evolution as a driver of ice sheet change - how important are rising lake temperatures?

格陵兰冰缘湖泊演化是冰盖变化的驱动因素——湖泊温度上升有多重要？

• 批准号: NE/X013537/1
• 负责人: David Rippin
• 金额: $ 92.02万
• 依托单位: University of York
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FX013537%2F1
• 关键词: Greenland; ice; marginal; lake; evolution

Are ice-sheet marginal lakes an emerging major driver of Greenland Ice Sheet margin change? Over the past 50 years, the Arctic has warmed at more than twice the global rate and it is virtually certain that this will continue. In response to this, the Greenland Ice Sheet (GrIS) has lost mass, and consequently the retreat of ice margins and increasing amounts of melt have led to a substantial growth in the number and size of ice-marginal lakes. These lakes are important because their presence leads to even more ice melting and enhanced mass loss. We hypothesise that these Greenlandic lakes are warming in line with atmospheric temperatures, and that a growing number of warming lakes will have an increasingly large impact on changes at the GrIS margins - this is important work as it could make us rethink how Greenland will melt. The aim of this proposal is to characterise the temporal and spatial thermal regime of Greenlandic ice-marginal lakes, and their impact on ice margin dynamics and recession.

冰盖边缘湖泊是格陵兰冰盖边缘变化的主要驱动因素吗？在过去的50年里，北极变暖的速度是全球变暖速度的两倍多，而且几乎可以肯定，这种情况将继续下去。因此，格陵兰冰盖（GrIS）失去了质量，因此，冰缘的退缩和融化量的增加导致冰缘湖泊的数量和规模大幅增加。这些湖泊很重要，因为它们的存在会导致更多的冰融化和更多的质量损失。我们假设这些格陵兰湖正在随着大气温度的升高而变暖，并且越来越多的变暖湖泊将对GrIS边缘的变化产生越来越大的影响——这是一项重要的工作，因为它可以让我们重新思考格陵兰岛将如何融化。本建议的目的是表征格陵兰冰缘湖泊的时空热状态，以及它们对冰缘动态和消退的影响。