Collaborative Research: The Role of Aquifers in Paleoclimatic Reconstructions of Glaciated Watersheds

该奖项授予明尼苏达大学和爱荷华州立大学的一项合作实验，该实验使用陆地大气耦合模拟程序（CLASP）直接比较模拟的古湖泊水位和水化学与高分辨率湖核记录推断的结果。该研究将定量评估含水层系统如何影响冰川流域内的湖泊水位波动，方法是将CLASP应用于明尼苏达州中北部已经得到充分研究的Crow Wing流域，并将CLASP模型结果与保存在湖泊沉积物中的代用记录的古气候重建结果进行比较。该模式通过模拟单个湖泊和河流的水文波动，可以在区域尺度上对全新世气候变化的古大气环流模式重建进行最全面的评价。

This award is for a collaborative experiment (University of Minnesota and Iowa State University) using a Coupled Land Atmosphere Simulation Program (CLASP) to make direct comparisons between simulated paleo lake-levels and hydrochemistry with those inferred from high-resolution lake-core records. The study will quantitatively evaluate how aquifer systems influence lake-level fluctuations within glaciated watersheds by applying CLASP to the well studied Crow Wing watershed in north-central Minnesota and by comparing the CLASP model results to paleoclimatic reconstructions from proxy records preserved in lake sediments. By simulating the hydrologic fluctuations of individual lakes and streams, the model will permit the most comprehensive evaluation of paleo atmospheric general circulation model reconstruction of Holocene climatic change at the regional scale.