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)建议的重点是发展对大气中有机硝酸盐化学的更好的过程级别的理解。该项目包括实验室、现场和建模工作，这些工作将对有机硝酸盐的光解、氧化和非均相降解途径提供基本的实验和观察约束。这项研究有望极大地改进大气中有机硝酸盐去向的模式参数，这对解决大气氮收支问题很重要。这项研究将：(1)合成一系列真正的单萜衍生的有机硝酸盐(RONO2)；(2)利用先进的质谱学技术，在有针对性的实验室实验中系统地评估它们的光解、氧化和水解的动力学、产物和机理；(3)将实验结果纳入最新的全球化学传输模型(GEOS-Chem)；以及(4)使用实验和更新的模型框架来解释将作为NSF大NY氧化剂、痕量气体、卤素、PI将与石溪大学艾伦·阿尔达科学传播中心合作，向公众提供更好地了解与空气质量和气候相关的问题的信息。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势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.