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.

这个项目是朝着更好地理解海洋-空气相互作用，特别是海洋和大气之间的气体通量迈出的创新一步。研究人员将首先在实验室修改新开发的用于船舶应用的大气压力电离质谱仪（APIMS）。测试结束后，研究人员将与其他一些小组合作进行海洋研究巡航，并使用APIMS系统直接测量二甲基硫化物（DMS）的海气通量，DMS是一种重要的生物微量气体和天然二次气溶胶前体。这项研究的更广泛影响包括开发一种非常强大的工具，可能对大气群落非常重要。该项目的结果将提供关于DMS通量的重要新数据，有助于改进全球模式中海气交换过程的参数化，并提供一个技术框架，以便在今后的研究中调查与气候有关的其他微量气体。研究生也将在该项目下接受实验室训练和海上研究经验。