SGER: Accessing climate- and lake-monitoring equipment, southern Alaska

这笔小额赠款将提供急需的远程气候和湖泊监测设备，这些设备目前安装在阿拉斯加南部，以便为气候变化研究保持连续的数据和样本流。这些监测站是美国国家科学基金会之前资助的研究项目的一部分。这笔拨款将允许继续收集阿拉斯加三个偏远湖泊的时间序列数据。沉积物捕集器、温度记录仪和降水记录将从已经到位的站点收集，冰川退缩的年度照片将更新。这些湖泊每年都有分层，可以准确地与气象记录相关联——这种机会在阿拉斯加极为罕见，如果数据收集中断，就会受到影响。限制已知的天气如何记录在年轻的湖泊沉积物中，将有助于更准确地解释更古老的沉积物的深层，并允许更好地重建更古老的气候条件。知识价值：古气候研究的一个主要目标是通过将湖泊/气象时间序列与古湖泊时间序列相结合，减少基于湖泊-沉积物代用物重建定量古气候记录的不确定性。2008年夏季三个气候和湖泊监测点的访问是非常必要的，以延长时间序列，以提高对该地区今天发生的快速环境变化的理解。随着时间序列的增长，利用湖泊沉积记录重建过去气候变化的变革性进步的潜力也在增加。更广泛的影响：通过这项研究获得的所有数据将在“阿拉斯加南部的阿拉斯加气候记录”网站（http://jan.ucc.nau.edu/~dsk5/S_AK/）上提供。

This small grant will provide urgently needed access to remote climate- and lake-monitoring equipment currently installed in southern Alaska in order to maintain a continuous stream of data and samples for climate-change research. The stations were installed as part of previous NSF-sponsored research. This grant will allow continued collection of time-series data from a set of three remote Alaskan lakes. Sediment trap, temperature logger, and precipitation records will be collected from stations already in place, and annual photographs of glacier retreat will be updated. The lakes exhibit annual layering in varves which can be accurately correlated with meteorological records - this opportunity is extremely rare in Alaska, and would be compromised if the data collection were interrupted. Constraining how known weather is recorded in young lake sediments will allow a more accurate interpretation of deep layers of older sediments, and allow better reconstructions of older climate conditions.Intellectual merit: A primary goal of paleoclimate research is to reduce the uncertainties in reconstructing quantitative paleoclimate records based on lake-sediment proxies by combining limnological/meteorological time series with paleolimnological time series. Access to three climate- and lake-monitoring sites in summer 2008 is critically needed to extend the time series to improve understanding of the rapid environmental changes occurring in the region today. As the time-series grows, so does the potential of a transformative advance in using lacustrine sedimentary records to reconstruct past climatic changes.Broader impacts: All of the data obtained through this study will be made available on the "Climatic Records from Alaska in Southern Alaska" website (http://jan.ucc.nau.edu/~dsk5/S_AK/).