Collaborative Research: Interactions Between Air Temperature, Permafrost and Hydrology in the High Latitudes of Eurasia

这项提案是在淡水一体化方案下开展的工作的基础上提出的，旨在解决两个相互关联的假设，目的是在不同的时间和空间尺度上增进对北极系统的了解。第一个假说将探索气温、河冰厚度和冬季径流之间的季节关系，第二个假说将研究永久冻土融化对河流流量的贡献。研究将侧重于俄罗斯北极和次北极地区内的几个河流流域和支流，自1950年以来一直收集这些地区的水文气象测量数据，气候数据可从若干全球数据档案中获得。PI小组收集的新的现场数据将扩大这些数据集，重点是永久冻土、同位素、水化学以及更高时间和空间分辨率的水文采样。这套测量将被用来使用分水岭尺度模型和地球物理研究所永久冻土实验室模型与水平衡和流量转换模型(WBMplus)相耦合的模型来验证假设。研究生和本科生将接受实地调查和建模方面的培训，这笔补助金将支持一名职业生涯早期的首席研究员。结果和方法也将纳入获奖机构教授的课程，以及通过少数族裔高中推广方案。在实地考察期间，将与伊加尔卡附近的居民保持持续的合作，并为当地的永久冻土博物馆提供材料。

This proposal builds off of work conducted under the Freshwater Integration program and seeks to address two interrelated hypotheses aimed at improved understanding of the Arctic system at various time and space scales. The first hypothesis will explore the seasonal relationship between air temperature, river ice thickness, and winter runoff, while the second will investigate the contribution of thawing permafrost to river discharge. Research will focus on several river basins and feeder streams within the Russian Arctic and sub-Arctic where hydrometeorological measurements have been collected since 1950 and climate data are available from a number of global data archives. These data sets will be augmented by new field data collected by the PI team, focusing on permafrost, isotopic, hydrochemical, and higher time and spatial resolution hydrologic sampling. This suite of measurements will be used to test the hypotheses using watershed scale models and the Geophysical Institute Permafrost Lab model coupled to the Water Balance and Discharge Transformation Model (WBMplus). Graduate students and an undergraduate will receive training in fieldwork and modeling, and the grant will support an early career principal investigator. Results and methodology will also be incorporated into courses taught at the awardee institutions as well as through minority high school outreach programs. During fieldwork, an ongoing collaboration with residents near Igarka will be maintained and materials provided for their local permafrost museum.