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

合作研究：欧亚北极主要流域的水文气候学

• 批准号: 9906906
• 负责人: Mark Serreze
• 金额: $ 36.18万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9906906&HistoricalAwards=false
• 关键词: Collaborative; Research; Hydro; Climatology; Major

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.

这项为期三年的研究将调查俄罗斯三条主要河流（鄂毕河、列纳河和叶涅塞河）水文的平均特征和潜在变化。 这三条河流对北极地区很重要，因为它们将大部分淡水径流从大陆带入北冰洋。 此外，气候变化可能与这些河流的水文相互作用，对陆源和海洋生态系统产生连锁反应。 在这项研究中，过去的天气档案将被用来评估一个重要的大气特征，如降水和蒸发之间的差异的时间序列。 将结合降水和河流径流记录以及关于积雪分布的卫星数据，以检验北极圈以南地区的冬季降水是否控制着这些河流的春季径流，而夏季降水则主要是陆地蒸发产生的再循环水。 水循环的长期变化将从这些数据中进行研究。 研究结果将有助于更好地了解西伯利亚中部和北方水循环的控制因素，这对未来预测气候变化对北极地区的影响具有重要意义。