Atmospheric Dimethyl Sulfide and Sulfur Dioxide Measurements at Baring Head, New Zealand

新西兰巴林角大气二甲硫醚和二氧化硫测量

• 批准号: 0001699
• 负责人: Warren De Bruyn
• 金额: $ 3.35万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-04-01 至 2001-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0001699&HistoricalAwards=false
• 关键词: Atmospheric; Dimethyl; Sulfide; Sulfur; Dioxide

Measurements of atmospheric dimethyl sulfide (DMS) and sulfur dioxide (SO2) will be made at Baring Head, New Zealand, using a new isotope dilution GC/MS instrument. The scientific goal of this project is to construct a budget for SO2 in the Southern Ocean marine boundary layer. Specifically, atmospheric DMS and SO2 will be measured simultaneously over at least ten diurnal cycles, the DMS to SO2 conversion efficiencies will be determined, as well as the relative magnitude of SO2 loss to clouds, sea salt aerosols and the sea surface. The field data will be interpreted using a photochemical box model. The long term objectives of this project are to investigate the relationship between the photochemical state of the atmosphere and the oxidation rates and pathways of sulfur gases and to improve our understanding of the relationship between sulfur gas precursors and the production and growth of aerosols.

使用新的同位素稀释GC/MS仪器，将对新西兰Baring Head进行大气二甲基硫化物（DMS）和二氧化硫（SO2）的测量。该项目的科学目标是在南大洋海洋边界层建造SO2的预算。具体而言，将在至少十个昼夜周期中同时测量大气DM和SO2，将确定DMS到SO2转化效率的DMS，以及SO2损失对云，海盐气溶胶和海面的相对大小。字段数据将使用光化学框模型来解释。该项目的长期目标是研究大气的光化学状态与硫气体的氧化速率和途径之间的关系，并提高我们对硫气前体与气溶胶的产生和生长之间关系的理解。