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

该提案建立在淡水整合计划下开展的工作基础上，并寻求解决两个相互关联的假设，旨在提高对不同时间和空间尺度的北极系统的理解。第一个假设将探讨气温、河冰厚度和冬季径流之间的季节关系，而第二个假设将研究永久冻土融化对河流流量的贡献。研究将集中在俄罗斯北极和亚北极地区的几个河流流域和支线溪流上，这些地区自1950年以来收集了水文气象测量数据，并从一些全球数据档案中获得了气候数据。这些数据集将通过PI团队收集的新的现场数据来增强，重点是永久冻土、同位素、水化学和更高时间和空间分辨率的水文采样。这一套测量将用于使用流域尺度模型和地球物理研究所永久冻土实验室模型以及水平衡和排放转化模型（WBMplus）来测试假设。研究生和本科生将接受实地考察和建模方面的培训，拨款将支持一名早期职业生涯的首席研究员。结果和方法也将纳入获奖机构的课程以及少数民族高中的外展项目。在实地考察期间，将与Igarka附近的居民进行合作，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.