We review major scientific results from Subtheme (1) "Variability of the Greenland Ice Sheet and climate" under Research Theme 2 "Variations in the ice sheet, glaciers, and the environment in the Greenland region" of the Arctic Challenge for Sustainability (ArCS) project. We participated in the international East Greenland Ice Core Project (EGRIP) led by Denmark, conducted snow pit observations near the coring site and reconstructed the surface mass balance over the past 10 years. Analyses of an ice core from Northwest Greenland revealed temporal variability in black carbon concentration over the past 350 years and in mineral dust over the past 100 years. To understand the mechanisms of ice-sheet flow, which is necessary for accurate predictions of sea level rise, we conducted laboratory experiments using artificial ice and derived an improved flow law for ice containing impurities. Ice sheet modeling was improved by including effects of impurities and ice stream dynamics. As part of the Ice Sheet Model Intercomparison Project for the Coupled Model Intercomparison Project Phase 6 (ISMIP6), we simulated ice sheet mass loss and contribution to sea level rise over the 21st century and beyond. Furthermore, we developed a Glacial Isostatic Adjustment model to better constrain ice sheet models.

我们审查了北极可持续性挑战（ArCS）的研究主题2“格陵兰地区冰盖，冰川和环境的变化”下的子主题（1）“格陵兰冰盖与气候的变化”的主要科学结果。项目。我们参加了由丹麦牵头的国际东部格陵兰冰芯项目（EGRIP），在取芯场附近进行了雪坑观测，并重建了过去10年的表面质量平衡。对西北格陵兰岛一个冰芯的分析显示，过去350年黑碳浓度和过去100年矿物质粉尘的时间变化。要了解冰盖流动的机制，这对于准确预测海平面上升是必不可少的，我们使用人造冰进行了实验室实验，得出了含有杂质的冰的改进流动规律。通过包括杂质和冰流动力学的影响，改善了冰盖模型。作为耦合模型比对项目第6阶段（ISMIP6）的冰盖模型比对项目的一部分，我们模拟了21世纪及以后的冰盖质量损失及其对海平面上升的贡献。此外，我们开发了冰川等静压调整模型来更好地约束冰盖模型。我们模拟了21世纪及以后冰盖的质量损失及其对海平面上升的贡献。此外，我们开发了冰川等静压调整模型来更好地约束冰盖模型。我们模拟了21世纪及以后冰盖的质量损失及其对海平面上升的贡献。此外，我们开发了冰川等静压调整模型来更好地约束冰盖模型。