Collaborative Research: Hydro-Climatology of the Major Eurasian Arctic Drainages

这项为期三年的研究将调查俄罗斯三条主要河流Ob、Lena和Yenesei河的平均特征和潜在的水文变化。这三条河流对北冰洋地区很重要，因为它们将大陆的大部分淡水径流输送到北冰洋。此外，气候变化可能会以对陆地和海洋生态系统产生连锁影响的方式与这些河流的水文相互作用。在这项研究中，过去的天气档案将被用来评估重要的大气特征的时间序列，如降水和蒸发之间的差异。将纳入降水和河流径流记录以及基于卫星的积雪分布数据，以测试北极圈以南地区的冬季降水是否控制了这些河流的春季河流径流，而夏季降水主要是陆地蒸发循环的水。水循环的长期变化将从这些数据中得到检验。研究结果应有助于更好地了解西伯利亚中部和北部对水循环的控制，这对今后预测气候变化对北极地区的影响将是重要的。

This three-year study will investigate the average characteristics and potential changes in the hydrology of three major Russian rivers, the Ob, Lena, and Yenesei Rivers. These three rivers are important for the Arctic region because they carry much of the freshwater runoff from the continents into the Arctic Ocean. Also, it is likely that climate change may interact with the hydrology of these rivers in ways that will have cascading affects on terrigenous and marine ecosystems. In this study, past weather archives will be used to evaluate a time-series of important atmospheric characteristics such as the difference between precipitation and evaporation. Records of precipitation and river runoff and satellite-based data on snow distributions will be incorporated to test whether winter precipitation in regions south of the Arctic Circle control the spring river runoff of these rivers, while summer precipitation is largely water recycled from terrestrial evaporation. Long-termed changes in the water cycle will be examined from these data. The results should lead to better understanding of the controls on the water cycle in central and northern Siberia, which will be important in future efforts to predict impacts of climate change on the Arctic region.