PostDoctoral Research Fellowship

拟议工作的目标是使用烯酮古温度测定法和化合物特定的氢同位素技术，从北极地区一系列湖泊（包括加拿大北极高纬度地区、挪威和瑞典）的层压沉积物中生成十年尺度的温度记录。另外50个沉积岩芯将检查烯酮的存在，以确定未来的古温度重建的网站。该方法结合了有机地球化学和稳定同位素技术，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，并将首次实现北极气候模式（例如AO/NAO）的数千年，百年尺度的空间重建。这项研究将有助于更好地了解气候变化在全新世晚期罗弗敦群岛和加拿大北极高地维京海盗定居模式中的作用。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）发展与公众交流科学的技能，（4）发展和应用空间数据分析的新技能，以及（5）接受未来研究分析仪器的培训。更广泛的影响包括：（1）通过分享湖泊烯酮古温度计的知识，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的本科生提供研究机会，（3）跨学科研究的新伙伴关系，（4）通过国家气候数据中心，期刊出版物和会议上的演讲与科学界分享数据，（5）建立一个项目网站，并为公众设计一个演示文稿。

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.