Atmospheric Carbon Dioxide and Climate Change: The WAIS Divide Ice Core Record

布鲁克0739766该奖项支持一个项目，该项目旨在从WAIS Divide冰芯创建25,000年来大气二氧化碳的高分辨率记录。该遗址具有较高的冰积累速度，相对较低的温度，以及应保留到4万年前的年度分层，所有这些都是保存高质量、准确日期的二氧化碳记录的先决条件。这项新记录将被用来研究南极气候、北半球气候和大气二氧化碳之间的关系，在冰川-间冰期到百年时间尺度上，以前所未有的时间分辨率。这项拟议工作的学术价值很简单，二氧化碳是人类直接影响的最重要的温室气体，了解大气二氧化碳的来源、汇和控制是全球科学界的主要目标。准确的年表和详细的记录是开发和测试解释和预测二氧化碳变异性的模型的主要要求。拟议中的工作有几个更广泛的影响。它有助于培养一名博士后研究员，他将在获奖期间转到研究型教师职位，并参与研究生教学和本科课程的客座讲座。本科生研究人员将获得有价值的实验室培训并进行独立研究。将拟议工作的结果带到课堂上将丰富PI教授的课程。外展工作将使大学预科学生接触到ICE核心研究。拟议的工作将加强俄亥俄州立大学冰芯研究的实验室设施，确保未来项目具有测量二氧化碳的能力。根据OPP政策，所有数据将在国家冰雪数据中心和其他类似档案中存档。非常有意义的成果将通过俄亥俄州立大学S非常有效的新闻传播集团传播给新闻媒体。二氧化碳是人类正在直接改变的最重要的温室气体。要预测碳循环和气候系统的未来行为，主要是为了确保在碳循环/气候模型中反映适当的过程，就必须了解二氧化碳和气候在所有时间尺度上是如何联系在一起的。拟议工作的一部分强调了二氧化碳与气候突变的关系。了解未来的突然变化可能如何影响碳循环对社会来说是一个重要的问题。

Brook 0739766This award supports a project to create a 25,000-year high-resolution record of atmospheric CO2 from the WAIS Divide ice core. The site has high ice accumulation rate, relatively cold temperatures, and annual layering that should be preserved back to 40,000 years, all prerequisite for preserving a high quality, well-dated CO2 record. The new record will be used to examine relationships between Antarctic climate, Northern Hemisphere climate, and atmospheric CO2 on glacial-interglacial to centennial time scales, at unprecedented temporal resolution. The intellectual merit of the proposed work is simply that CO2 is the most important greenhouse gas that humans directly impact, and understanding the sources, sinks, and controls of atmospheric CO2 is a major goal for the global scientific community. Accurate chronology and detailed records are primary requirements for developing and testing models that explain and predict CO2 variability. The proposed work has several broader impacts. It contributes to the training of a post-doctoral researcher, who will transfer to a research faculty position during the award period and who will participate in graduate teaching and guest lecture in undergraduate courses. An undergraduate researcher will gain valuable lab training and conduct independent research. Bringing the results ofthe proposed work to the classroom will enrich courses taught by the PI. Outreach efforts will expose pre-college students to ice core research. The proposed work will enhance the laboratory facilities for ice core research at OSU, insuring that the capability for CO2 measurements exists for future projects. All data will be archived at the National Snow and Ice Data Center and other similar archives, per OPP policy. Highly significant results will be disseminated to the news media through OSU?s very effective News and Communications group. Carbon dioxide is the most important greenhouse gas that humans are directly changing. Understanding how CO2 and climate are linked on all time scales is necessary for predicting the future behavior of the carbon cycle and climate system, primarily to insure that the appropriate processes are represented in carbon cycle/climate models. Part of the proposed work emphasizes the relationship of CO2 and abrupt climate change. Understanding how future abrupt change might impact the carbon cycle is an important issue for society.