Collaborative Research: New insights into the Holocene methane budget from dual isotope systematics and a high resolution record of the interpolar gradient

合作研究：从双同位素系统学和极间梯度的高分辨率记录对全新世甲烷预算的新见解

• 批准号: 0520470
• 负责人: Todd Sowers
• 金额: $ 23.32万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0520470&HistoricalAwards=false
• 关键词: Collaborative; Research; New; insights; into

Abstract for 0520470 This is a collaborative proposal by Principal Investigators from the Oregon State University and Pennsylvania State University. During this project, they will evaluate trends, mechanisms and sources of atmospheric methane loading through the Holocene. Their approach will include a detailed sampling of previously recovered ice cores from Greenland and modeling experiments to document long-term trends in the Holocene as well as during critical periods such as the early Holocene, the 8.2 ka event, the last 5,000 years (a period of proposed anthropogenic input), and the last 200 years. The use of specific methane isotopes, modeling, and comparison of interpolar gradients through time will allow more accurate determination of sources and causes of atmospheric methane concentrations archived in polar ice cores. This further analysis of the interpolar methane gradient, presumably controlled by larger northern hemisphere sources, is anticipated to shed light on changing methane sources through the Holocene.

0520470 摘要 这是俄勒冈州立大学和宾夕法尼亚州立大学首席研究员的合作提案。 在该项目期间，他们将评估全新世大气甲烷负荷的趋势、机制和来源。他们的方法将包括对之前从格陵兰岛回收的冰芯进行详细采样，并进行建模实验，以记录全新世以及全新世早期、8.2ka事件、过去5000年（一个时期）等关键时期的长期趋势。拟议的人为输入），以及过去 200 年。使用特定的甲烷同位素、建模和随时间变化的极间梯度比较将有助于更准确地确定极地冰芯中存档的大气甲烷浓度的来源和原因。对极间甲烷梯度的进一步分析（可能是由较大的北半球源控制）预计将揭示全新世甲烷源的变化。