PostDoctoral Research Fellowship

这项工作的目标是利用烯烃古测温学和化合物特定氢同位素技术，从北极地区一系列湖泊的层状沉积物中生成十年尺度的温度记录，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。该方法将有机地球化学和稳定同位素技术结合在一起，是古气候研究的一种创新方法。该研究将为北极不同地区全新世气候变化提供新的见解，并将使北极气候模式（例如AO/NAO）的第一次数千年、百年尺度的空间重建成为可能。这项研究将有助于更好地理解气候变化在全新世晚期罗弗敦群岛和加拿大高地北极地区维京人定居模式中的作用。博士后奖学金对PI的好处包括：(1)与美国和国际科学家建立新的合作伙伴关系，(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的新技能，(5)接受分析仪器的培训，以供未来的研究。更广泛的影响包括(1)通过分享湖烯酮古温学知识，增加马萨诸塞大学阿默斯特分校气候研究的范围；(2)为马萨诸塞大学阿默斯特分校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与科学界共享数据，期刊出版物和会议演讲，并通过访问学校与公众共享数据。(5)建设项目网站，制作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.