Ethane measurements in Greenland ice cores: Developing a preindustrial record

格陵兰冰芯中的乙烷测量：建立前工业化记录

• 批准号: 1204248
• 负责人: Murat Aydin
• 金额: $ 29.79万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-15 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1204248&HistoricalAwards=false
• 关键词: Ethane; measurements; Greenland; ice; cores; Ethane; measurements; Greenland; ice; cores

Ethane is one of the most abundant hydrocarbon gases in the atmosphere with emissions from production and use of fossil fuels, from biomass burning, and from a variety of geologic sources. All ethane sources also emit methane, the second most important greenhouse gas in the atmosphere. However, ethane does not share the biological source of methane, making it a useful proxy for specific methane sources.This project will analyze of paleo-atmospheric ethane (C2H6), using a wet-extraction technique that has been used to measure ethane in Antarctic ice cores, using ice core samples from Summit, Greenland and producing the first northern hemisphere ethane record. The results will enable answers to questions about the importance of geological emissions of methane to the preindustrial atmosphere, and about the timing and magnitude of changes in biomass burning emissions during the late Holocene. In conjunction with measurements on Antarctic ice cores, the data from this project will help establish the north-south interhemispheric gradient of ethane in the preindustrial atmosphere.This project includes support for a PhD student and undergraduate researchers in the Department of Earth System Science at the University of California, Irvine. The results will contribute to a PhD dissertation and senior theses of senior undergraduate students. This project will also create summer research opportunities for undergraduates from non- research active universities through the REU site program in Biogeochemistry and Climate Change. The PI and the co-PI will participate in on- and off-campus activities directed towards educating high-school science teachers about climate change and its impacts, including a presentation at the 2011 regional meeting of the National Science Teachers Association. The results of this work will be disseminated via peer-review publications and will contribute to policy-relevant activities such as the IPCC Climate Assessment. Data resulting from this project will be archived in a national data repository.

乙烷是大气中最丰富的碳氢化合物气体之一，来自化石燃料，生物质燃烧以及各种地质来源的产生和使用。所有乙烷源还散发出甲烷，这是大气中第二重要的温室气体。然而，乙烷并不具有甲烷的生物学来源，使其成为特定甲烷源的有用代理。该项目将使用已用于使用冰核心的冰核样本来测量南方冰核的湿级交流技术对古 - 原始乙烷（C2H6）进行分析，该项目用于测量乙烷，并从山顶，Greenland，Greenland，首次北方乙烷乙烷phece shemise sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere sphere pheere sphere pheere sphere。结果将使有关甲烷对工业前气氛的地质排放的重要性以及关于生物质燃烧发射期间晚期的时间和幅度的重要性的答案。结合对南极冰核的测量，该项目的数据将有助于在工业前大气中建立乙烷的南北斜面梯度。该项目包括对加利福尼亚大学尔湾分校地球系统科学系的博士生和本科研究人员的支持。结果将有助于博士学位论文和高级本科生的高级论文。该项目还将通过生物地球化学和气候变化的REU站点计划为非研究活跃大学的本科生创造夏季研究机会。 PI和COPI将参加旨在教育高中科学教师有关气候变化及其影响的校外活动，包括在2011年国家科学教师协会区域会议上的演讲。这项工作的结果将通过同行评审出版物传播，并将促进与政策相关的活动，例如IPCC气候评估。该项目产生的数据将在国家数据存储库中存档。