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

该项目涉及从大气尘埃输送到海洋的营养物质（特别是铁），以及海洋生物因此产生的含硫气体物质（如二甲基硫醚，二甲基硫醚）。二甲硫醚产量的增加导致大气颗粒物形成的增加，而这反过来又会影响气候。首席研究员将参加一次研究巡航，在那里她将对大气颗粒物进行采样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，硫酸盐的大气颗粒物浓度和甲磺酸（MSA），DMS的所有氧化产物。她还将进行光化学沥滤实验，模拟大气气溶胶和海水之间的相互作用，该项目得到ADVANCE计划的支持，将启动一名女科学家的独立职业生涯。它将使本科生接触大气化学和海洋学的研究，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.