Assessing the Long-Term Contribution of Landfast Ice to the Arctic Freshwater Budget

拟议的研究将评估北冰洋陆冰的年际变化及其对北极淡水预算的长期贡献。目标是检查整个北极盆地的可变性，调查冰的快速增长、融化和盐水通量的时空变化，并分析淡水储存方面的长期冰量变化，以及对降水、地表气温、风和河流流量的气候规模变化的反应。研究方法将是将国家冰中心最近发布的冰图中26年的陆冰记录与一维热力学模型结合起来。这项工作将强调一种时间序列方法，侧重于与北极涛动有关的年代际变化以及北极不同分区域之间的空间变化。关于陆地冰年际变化的结果将有利于北极淡水循环的其他研究者和居住在北极水体附近的人口。

The proposed research will assess the interannual variability of Arctic Ocean landfast ice and its long-term contribution to the Arctic freshwater budget. Goals are to examine variability for the entire Arctic Basin, investigate spatial and temporal changes in fast ice growth, melt and brine fluxes, and analyze long-term ice volume change in terms of freshwater storage and in response to climate-scale variation in precipitation, surface air temperatures, winds and river discharge. The research approach will be to combine a 26-year landfast ice record, available from ice charts recently released by the National Ice Center, with a 1-D thermodynamic model. The work will emphasize a time series approach focussed on decadal change associated with the Arctic Oscillation and spatial variation among different sub-regions within the Arctic. Results on interannual variations in landfast ice will benefit both other investigators of the Arctic Freshwater Cycle and populations dwelling adjacent to Arctic water bodies.