Direct Measurement of the Dimethyl Sulfide (DMS) Sea-Air Flux and Exchange Coefficient

二甲硫醚 (DMS) 海气通量和交换系数的直接测量

• 批准号: 0241611
• 负责人: Barry Huebert
• 金额: $ 40.38万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-15 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0241611&HistoricalAwards=false
• 关键词: Direct; Measurement; Dimethyl; Sulfide; DMS

This project is an innovative step toward a better understanding of sea-air interaction, in particular gas fluxes between the ocean and atmosphere. The investigators will initially modify in the laboratory a newly developed Atmospheric Pressure Ionization Mass Spectrometer (APIMS) for shipboard applications. After testing, the investigators will collaborate with a number of other groups on ocean research cruises and use the APIMS system to measure directly the sea-to-air flux of dimethyl sulfide (DMS), an important biogenic trace gas and natural secondary aerosol precursor. The broader impacts of this research include developing a very powerful tool potentially of great importance to the atmospheric community. The project results will provide important new data on DMS fluxes useful for improving parameterizations of the sea-air exchange process in global models, and provide a technical framework by which other trace gases relevant to climate might be investigated in future studies. Graduate students will also receive laboratory training and research experience at sea under the project.

该项目是朝着更好地理解海上互动的创新一步，尤其是海洋和大气之间的气体通量。 研究人员最初将在实验室中修改新开发的大气压力电离质谱仪（APIMS），以用于船上应用。 测试后，研究人员将与许多其他有关海洋研究巡航的小组合作，并使用API​​MS系统直接测量二甲基硫化物（DMS）的海对空气通量，二甲基硫化物（DMS）是一种重要的生物痕量气体和天然的二级气溶胶前体。 这项研究的更广泛的影响包括开发一种非常有可能对大气社区重要的工具。 该项目的结果将提供有关DMS通量的重要新数据，可用于改善全球模型中海水交换过程的参数化，并提供一个技术框架，通过该框架，可以在未来的研究中研究与气候相关的其他痕量气体。 研究生还将在该项目的海上获得实验室培训和研究经验。