ADVANCE Fellows: Marine Atmospheric Iron and Sulfur: Impact on Biological Activity in the Ocean

ADVANCE 研究员：海洋大气铁和硫：对海洋生物活动的影响

• 批准号: 0137891
• 负责人: Anne Johansen
• 金额: $ 35万
• 依托单位: Central Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-05-01 至 2007-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0137891&HistoricalAwards=false
• 关键词: ADVANCE; Fellows; Marine; Atmospheric; Iron

This project addresses the input of nutrients (specifically, iron) to the oceans from atmospheric transport of dust, and the production of sulfur containing gaseous species (such as DMS, dimethyl sulfide) by the ocean organisms as a result. Increased production of DMS leads to increased atmospheric particle formation which in turn can affect climate. The principal investigator will participate in a research cruise where she will sample atmospheric particulates and analyze them for their trace metal content (including Fe(II)), and measure the gas-phase concentrations of sulfur dioxide (SO2), the atmospheric particulate concentrations of sulfate, and methane sulfonic acid (MSA), all oxidation product of DMS. She will also carry out photochemical leaching experiments which will simulate the interaction between atmospheric aerosols and ocean water.This project, supported under the ADVANCE program, will launch the independent career of a female scientist. It will expose undergraduate students to research at the interface of atmospheric chemistry and oceanography, and will improve our understanding of the role of atmospheric aerosols in enhancing ocean productivity.

该项目介绍了从大气传输粉尘传输到海洋的养分的输入，以及由海洋生物的产生含硫的硫酸盐（例如DMS，例如DMS，例如DMS，例如DMS，二甲基硫化物）。 DMS的产生增加会导致大气颗粒的形成增加，进而影响气候。主要研究者将参加研究巡航，她将在其中采样大气颗粒物并分析其微量金属含量（包括Fe（II）），并测量二氧化硫（SO2）的气相浓度，这是大气颗粒的浓度硫酸盐和甲烷磺酸（MSA），所有DMS的氧化产物。她还将进行光化学浸出实验，该实验将模拟大气气溶胶与海水之间的相互作用。该项目在Advance Program的支持下将启动女科学家的独立职业。它将使本科生在大气化学和海洋学的界面上进行研究，并将提高我们对大气气溶胶在提高海洋生产率方面的作用的理解。