AGS-PRF: Evaluating the Changing Role of Monoterpenes in Regulating Atmospheric Reactive Nitrogen Budgets

这项博士后研究奖学金（PRF）提案的重点是发展对大气中有机硝酸盐化学的更好的过程级理解。该项目包括实验室、实地和建模工作，将为有机硝酸盐的光解、氧化和非均相降解途径提供基本的实验和观察约束。该研究有望极大地改善大气中有机硝酸盐命运的模型参数化，这对解决大气氮收支至关重要。研究将：(1)合成一系列真正的单萜烯衍生的有机硝酸盐（RONO2）；(2)在有目标的实验室实验中使用先进的质谱技术系统地评估它们的光解、氧化和水解的动力学、产物和机制；(3)将实验结果纳入最先进的全球化学运输模型（GEOS-Chem）；(4)使用实验和更新的模型框架来解释单萜烯、O3、NOx的测量结果；并指定了RONO2，将作为NSF大氧化、微量气体、卤素和气溶胶机载任务（gotham）的一部分收集。PI将与石溪大学艾伦·阿尔达传播科学中心合作，为公众提供更好地了解空气质量和气候相关问题的信息。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This Postdoctoral Research Fellowship (PRF) proposal focuses on developing a better process-level understanding of the chemistry of organic nitrates in the atmosphere. This project includes laboratory, field, and modeling work that will provide fundamental experimental and observational constraints on the photolytic, oxidative, and heterogeneous degradation pathways of organic nitrates. This research is expected to greatly improve model parameterizations of the fate of organic nitrates in the atmosphere, important for resolving the atmospheric nitrogen budget. The research will: (1) synthesize a series of authentic monoterpene-derived organic nitrates (RONO2), (2) systematically evaluate the kinetics, products, and mechanisms of their photolysis, oxidation, and hydrolysis in targeted laboratory experiments using advanced mass spectrometric techniques, (3) incorporate experimental findings into a state-of-the-science global chemical transport model (GEOS-Chem), and (4) use the experiments and updated model framework to interpret measurements of monoterpenes, O3, NOx, and speciated RONO2 that will be collected as part of the NSF GreaterNY Oxidant, Trace Gas, Halogen, and Aerosol Airborne Mission (GOTHAAM).The PI will work with the Stony Brook University Alan Alda Center for Communicating Science to provide information to the public on better understanding issues associated with air quality and climate.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.