Contemporary Water and Constituent Balances for the Pan-Arctic Drainage System: Continent to Coastal Ocean Fluxes

摘要全球气候变化对北极的预期影响之一是淡水平衡的急剧变化。北冰洋淡水输入的变化将影响海冰的形成、湿地和海洋生产力以及世界海洋的热盐环流。尽管淡水径流对北极和全球气候具有重要意义，但从未编制过整个北极的当代数据集。该项目将使用来自北美和俄罗斯的检查数据来量化当代水平衡和该平衡的年度变化。水径流数据将用于模型中，以估计从大陆到邻近海洋的沉积物和营养物的通量。这一现代的基线数据集和模型将用于判断所预测的气候变化对环北极水域和营养平衡的可能影响，并将为估计污染物途径和潜在影响提供一种手段。这一研究项目的结果将为评估未来气候变化提供一个基准。

OPP-9524740 PETERSON, BRUCE ABSTRACT One of the expected effects of global climate change on the Arctic is a dramatic change in the freshwater balance. Changes in freshwater input to the Arctic Ocean will affect sea ice formation, wetland and ocean productivity, and thermohaline circulation in the world's ocean. In spite of the importance of freshwater runoff to the Arctic and global climate, a contemporary data set for the entire Arctic has never been compiled. This project will use examine data from North American sources and Russian sources to quantify the contemporary water balance and the annual variability of that balance. The water runoff data will be used in models to estimate the flux of sediment and nutrients from the continents to the adjacent seas. This contemporary, baseline data set and model will be used to judge the likely impacts of predicted climate change on circumarctic water and nutrient balances and will provide a means for estimating contaminant pathways and potential impacts. The results of this research project will provide a benchmark against which future climate changes may be assessed.