Exploring the atmospheric ORIGin of Amines within the Marine boundarY layer: A combined field modelling approach (ORIGAMY)

胺是海洋环境中重要的有机组成部分，但人们对其了解甚少。他们建议影响新的粒子和气溶胶质量的海洋边界层内的形成。迄今为止，关于（i）来源，（ii）海洋大气多相化学系统中胺的进一步处理，以及（iii）对海洋气溶胶质量的贡献，仍然存在很大的不确定性。 更深入地了解海洋气溶胶中与胺相关的有机氮形成以及可能的氧化控制排放，需要结合专门的现场测量进行基本的机械多相氧化建模研究。由于尚未对这些胺的多相氧化进行详细的机理或建模研究，迄今为止还没有采用这种方法，ORIGAMY的总体目标是发现影响胺从海洋排放到大气中的因素及其对有机气溶胶质量、气溶胶酸度和新粒子形成的影响。我们的目标是通过应用专门的新的现场测量结合新的多相化学建模研究，填补海洋边界层中胺的来源，相分配和氧化过程方面存在的知识空白。有机胺现场测量、排放模拟和化学老化模拟相结合以了解现场结果是本研究的一项新的重大创新成果。ORIGAMY的结果将为确定海洋边界层中有机胺和有机胺处理的重要性以及将有机胺相关大气过程实施到更高尺度模型中的必要性提供重要依据。

Amines are crucial but little understood organic constituent in the marine environment. They are suggested to impact new particle and aerosol mass formation within the marine boundary layer. To date, there are still very high uncertainties with regards to (i) the source, (ii) further processing of amines within the marine atmospheric multiphase chemical system, and (iii) contribution to marine aerosol mass. A deeper understanding of the amine related organic nitrogen formation within marine aerosols as well as possible oxidation-controlled emission from the ocean into the atmosphere requires fundamental mechanistic multiphase oxidation modelling studies combined with dedicated field measurements. Such approaches are missing to date as detailed mechanism or modelling studies about the multiphase oxidation of these amines has not been performed yet.The overall goal of ORIGAMY is to discover the factors influencing the emission of amines from the ocean into the atmosphere and their effect on organic aerosol mass, aerosol acidity and new particle formation. We aim to fill the big gaps of knowledge that exist concerning the sources, phase partitioning, and oxidation processes for amines in the marine boundary layer by applying dedicated new field measurements in combination with novel multiphase chemistry modelling studies. The combination of amine field measurements, emission modelling and modelling of chemical aging to understand the field results is thereby a new big innovative achievement that will result from this study.The results from ORIGAMY will provide an important basis to identify the importance of amine and amine processing in the marine boundary layer and the need to implement amine related atmospheric processes into higher scale models.