Collaborative Research: Climate Controls on Aerosol Fluxes to Taylor Dome and Taylor Glacier

合作研究：气候对泰勒圆顶和泰勒冰川气溶胶通量的控制

• 批准号: 1246702
• 负责人: Sarah Aciego
• 金额: $ 37.86万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-10-01 至 2017-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1246702&HistoricalAwards=false
• 关键词: Collaborative; Research; Climate; Controls; Aerosol

1246702/AciegoThis award supports a collaborative project to analyze ice from the Taylor Dome core and exposed ice from Taylor Glacier to measure variations in the isotopic composition of Strontium, Neodymium, and Hafnium, trace element concentrations, major anions and cations, and dust size data in order to assign provenance of dust within the ice. The intellectual merit of the proposed work is to provide provenance information that will be used to investigate the dust flux response to large, rapid regional and global (hemispheric) climate changes on a millenia scale. The first part of the work will focus on ice from the Taylor Dome core and then transition to surface ice from Taylor Glacier. The PIs will collect large-sized samples of known age based on the methane and oxygen isotope composition of the trapped gases; samples will be large enough to carry out measurements on different size fractions. Parallel work will be done to determine the radiogenic isotope values of southern hemisphere (New Zealand, Australia, South Africa) and local (Northern and Southern Victoria Land) dust source material that are potentially entrained and deposited across the Taylor Dome region. The broader impacts of this research encompass collaborative, outreach, educational, and diversity initiatives. The work will be an international collaboration with researchers at the University of Michigan, Ohio State University, Università Milano-Bicocca, and Università di Pisa, the latter two in Italy. Dissemination of research findings will include both scientific forums and public lectures. Funding will provide support for one PhD student, one MS student, and at least one undergraduate student. The project participants will be involved in the new UC Irvine American Indian Summer School in Earth System Science for high school students using this project as a jumping off point for discussing polar issues and climate change. This award has field work in Antarctica

1246702/Aciego该奖项支持一个合作项目，以分析来自泰勒圆顶核心的冰和泰勒冰川的暴露冰，以测量锶，钕和铪的同位素组成，微量元素浓度，主要阴离子和阳离子以及尘埃大小数据的变化，以分配冰内尘埃的来源。拟议工作的智力价值是提供来源信息，将用于调查千年尺度上大规模、快速的区域和全球（半球）气候变化对尘埃通量的反应。第一部分的工作将集中在冰从泰勒圆顶核心，然后过渡到表面冰从泰勒冰川。PI将根据捕获气体的甲烷和氧同位素组成收集已知年龄的大型样本;样本将足够大，以进行不同粒度的测量。将开展平行工作，以确定南半球（新西兰、澳大利亚、南非）和当地（北方和维多利亚地南部）可能夹带和沉积在泰勒穹区域的尘埃源物质的放射性同位素值。这项研究的更广泛的影响包括合作，推广，教育和多样性举措。这项工作将是与密歇根大学、俄亥俄州州立大学、米兰比可卡大学和比萨大学的研究人员进行的国际合作，后两所大学位于意大利。研究成果的传播将包括科学论坛和公开讲座。 资金将为一名博士生，一名硕士生和至少一名本科生提供支持。项目参与者将参与新的加州大学欧文分校美国印第安人地球系统科学暑期学校，高中学生使用这个项目作为讨论极地问题和气候变化的出发点。这个奖项有在南极洲的实地工作