Collaborative Research: Atmospheric Chlorine Oxidation of Hydrocarbons Emitted from the North Slope of Alaska Oil Fields

本项目的目标是研究大气中痕量气体的氯氧化机理。科学家们计划对最近在Oliktok Point进行的一个油田项目中收集的数据进行分析、建模和解释。Oliktok Point位于阿拉斯加油田的沿海北坡范围内。该项目将解决对周围大气中挥发性有机化合物(VOCs)氯氧化的关键知识空白，并有可能改变有关大气氯化学的知识，对冬季和海洋/沿海环境有影响。这些活动将通过以下目标一起用于研究大气微量气体氯氧化的主要机制：(1)识别北极油田中的活性VOCs并量化它们的氯反应活性；(2)识别VOC+Cl反应的含氧VOCs(OVOC)和二次有机气溶胶(SOA)；以及(3)研究2020年由能源部支持的北极Clorox野外活动中有效氯化学期间的VOC、OVOC和SOA组成数据，连接目标1和2。该项目是对尊敬的同事来信21-064“支持在大气科学研究和教育中使用现有数据和样本”的回应。几名本科生和研究生将通过在私营部门研发环境中的指导接受培训和经验。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。

The goal of this project is to investigate the mechanisms of chlorine (Cl) oxidation of trace gases in the atmosphere. Scientists plan to conduct analyses, modeling and interpretation of data collected during a recent field project at Oliktok Point, an area that is within the coastal North Slope of Alaska oil fields. This project will address key knowledge gaps in the understanding of Cl oxidation of volatile organic compounds (VOCs) in the ambient atmosphere and has the potential to transform knowledge about atmospheric Cl chemistry, with implications for wintertime and marine/coastal environments.The activities will be used together to investigate the dominant mechanisms of Cl oxidation of atmospheric trace gases through the following objectives: (1) Identify reactive VOCs and quantify their Cl reactivity in an Arctic oil field; (2) Identify oxygenated VOCs (OVOC) and secondary organic aerosol (SOA) products of VOC + Cl reactions; and (3) Investigate the 2020 Arctic DOE-supported CLOROX field campaign VOC, OVOC, and SOA composition data during active chlorine chemistry, connecting objectives 1 and 2. This project is in response to Dear Colleague Letter 21-064 “Supporting the Use of Existing Data and Samples in Atmospheric Sciences Research and Education.” Several undergraduate and graduate students will receive training and experience through mentoring in a private sector R&D environment.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.