PostDoctoral Research Fellowship

拟议工作的目标是使用烯酮古测温法和特定于化合物的氢同位素技术，从北极地区一系列湖泊的层状沉积物中产生十年尺度的温度记录，这些湖泊包括加拿大北极高地、挪威和瑞典。另外50个沉积物岩心将被检查是否存在烯酮，以确定未来古温度重建的地点。建议的跨学科方法结合了有机地球化学和稳定同位素技术，是研究区域的新技术，代表了古气候研究的一种创新方法。这项研究将对北极不同地区的全新世气候变异性提供新的见解，并将首次对北极气候模式进行几千年、百年尺度的空间重建(例如，北极涛动/北大西洋涛动)。这项研究将有助于更好地理解气候变化在推动罗福滕群岛和加拿大北极高地的维京人定居模式中所起的作用。国际和平研究所博士后奖学金的好处包括：(1)与美国和国际科学家建立新的伙伴关系，(2)培养大学教学技能，(3)培养与公众交流科学的技能，(4)开发和应用空间数据分析方面的新技能，以及(5)为未来的研究接受关于分析仪器的培训。更广泛的影响包括：(1)通过分享湖泊烯酮古测温知识，扩大阿默斯特大学的气候研究范围；(2)为阿默斯特大学的本科生提供研究机会；(3)建立跨学科研究的新伙伴关系；(4)通过国家气候数据中心、期刊出版物和会议报告，以及通过访问学校与普通公众分享数据；(5)建立一个项目网站，并开发一个面向公众的演示文稿。

The goal of the proposed work is to use alkenone paleothermometry and compound-specific hydrogen isotope techniques to generate decadal-scale temperature records from the laminated sediments of a series of lakes across the Arctic, including the Canadian High Arctic, Norway and Sweden. A further fifty sediment cores will be examined for the presence of alkenone, in order to identify sites for future paleotemperature reconstructions. The proposed interdisciplinary approach combines organic geochemical and stable isotopic techniques novel to the study regions, and represents an innovative approach to paleoclimate research. The study will provide new insights into Holocene climate variability in different regions of the Arctic, and will allow the first multi-millennia, centennial-scale spatial reconstruction of Arctic climate patterns (e.g. the AO/NAO). The research will contribute to a better understanding of the role of climate change in driving patterns of Viking settlement in the Lofoten Islands and High Canadian Arctic during the late Holocene. The benefits of the Post-doctoral Fellowship to the PI include (1) the formation of new partnerships with American and international scientists, (2) cultivate university teaching skills, (3) develop skills for communicating science with the general public, (4) develop and apply new skills in spatial data analysis, and (5) receive training on analytical instruments for future research. The Broader Impacts include (1) increasing the scope of climate research at the UMass Amherst by sharing knowledge of lacustrine alkenone paleothermometry, (2) research opportunities for undergraduates at UMass Amherst, (3) new partnerships for cross-disciplinary research, (4) data to be shared with the scientific community via the National Climatic Data Center, journal publications and presentations at conferences, and with the general public through visits to schools, (5) construction of a project Web site and development of a presentation designed for the general public.