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

AGS-PRF：评估单萜在调节大气活性氮预算中的作用变化

• 批准号: 2132296
• 负责人: Christopher Kenseth
• 金额: $ 19万
• 依托单位: Kenseth, Christopher M
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-07-01 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2132296&HistoricalAwards=false
• 关键词: AGS; PRF; Evaluating; Changing; Role

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.

该博士后研究奖学金 (PRF) 提案的重点是更好地从过程层面理解大气中有机硝酸盐的化学性质。该项目包括实验室、现场和建模工作，将为有机硝酸盐的光解、氧化和异质降解途径提供基本的实验和观察约束。这项研究预计将大大改善大气中有机硝酸盐归宿的模型参数化，这对于解决大气氮收支问题非常重要。该研究将：(1) 合成一系列正宗的单萜衍生有机硝酸酯 (RONO2)，(2) 使用先进的质谱技术在有针对性的实验室实验中系统评估其光解、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传输模型 (GEOS-Chem)，以及 (4) 使用实验和更新的模型框架来解释单萜、O3、 NOx 和特定 RONO2，这些将作为 NSF GreaterNY 氧化剂、微量气体、卤素和气溶胶机载任务 (GOTHAAM) 的一部分进行收集。PI 将与石溪大学艾伦阿尔达科学传播中心合作，向该奖项反映了 NSF 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。