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

该项目解决了大气中灰尘运输向海洋输入的营养物质（特别是铁），以及海洋生物产生的含硫气态物质（如DMS、二甲基硫化物）。DMS的增加导致大气颗粒形成增加，进而影响气候。首席研究员将参加一次研究巡航，在那里她将取样大气微粒并分析它们的微量金属含量（包括铁（II）），并测量二氧化硫（SO2）的气相浓度，硫酸盐的大气微粒浓度和甲烷磺酸（MSA），这些都是DMS的氧化产物。她还将进行光化学浸出实验，模拟大气气溶胶和海水之间的相互作用。该项目由ADVANCE计划支持，将开启女性科学家的独立职业生涯。它将使本科生接触到大气化学和海洋学界面的研究，并将提高我们对大气气溶胶在提高海洋生产力方面的作用的理解。

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.