Measurements and Modeling of Isotopic Ratios of Atmospheric Methane and Carbon Monoxide from Pacific Ocean Shipboard Sampling

太平洋船载采样中大气甲烷和一氧化碳同位素比的测量和建模

• 批准号: 0122885
• 负责人: Henry Ajie
• 金额: $ 48.71万
• 依托单位: University of California-Irvine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-12-15 至 2005-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0122885&HistoricalAwards=false
• 关键词: Measurements; Modeling; Isotopic; Ratios; Atmospheric

This project involves the measurement of the isotopic and mixing ratios of methane and carbon monoxide from a shipboard transect in the Pacific Ocean between Los Angeles and New Zealand. These combined measurements, made through four trips per year for three years, will help answer questions related to the growth rate of methane in the atmosphere and provide constraints on the overall global budgets of methane and carbon monoxide. The resultant methane data will be combined with data from other researchers and used in a 3-D model to evaluate the changes concentrations of atmospheric methane and how these changes affect the oxidizing power of the atmosphere. This project involves collaboration with a research group in Wellington, New Zealand that is making similar measurements and collaboration with the University of Oslo where the modeling and analysis will take place. These collaborations greatly enhance the ability of this effort to produce information with broader societal relevance, such as developing an improved understanding of the global methane budget that has implications for understanding human impact on climate change.

该项目涉及测量洛杉矶和新西兰之间太平洋上一条船上横断面的甲烷和一氧化碳的同位素和混合比率。这些综合测量在三年内每年四次进行，将有助于回答与大气中甲烷的增长率有关的问题，并对全球甲烷和一氧化碳的总体预算提供限制。生成的甲烷数据将与其他研究人员的数据结合起来，用于3D模型，以评估大气中甲烷浓度的变化，以及这些变化如何影响大气的氧化能力。该项目涉及与新西兰惠灵顿的一个正在进行类似测量的研究小组的合作，以及与奥斯陆大学的合作，在那里将进行建模和分析。这些合作极大地提高了这一努力产生具有更广泛社会意义的信息的能力，例如改进了对全球甲烷预算的理解，这对理解人类对气候变化的影响具有影响。