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

该项目涉及大气灰尘运输向海洋输入的营养物质(特别是铁)，以及由此产生的海洋生物产生的含硫气体物种(如二甲基二甲基硫、二甲基硫化物)。二甲基硫产量的增加会导致大气中颗粒物的形成增加，进而会影响气候。首席研究员将参加一次研究巡航，在那里她将采样大气颗粒并分析它们的痕量金属含量(包括Fe(II))，并测量二氧化硫(SO2)的气相浓度、大气中硫酸盐的颗粒浓度以及二甲基硫的所有氧化产物甲烷磺酸(MSA)。她还将进行光化学淋溶实验，模拟大气气溶胶和海水之间的相互作用。该项目在高级计划的支持下，将启动一名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的界面研究，并将增进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.