Collaborative Research: New Measurements to Understand Coastal Ozone Production During the 2017 Lake Michigan Ozone Study

该项目包括一个由科学家组成的多机构小组，他们正在进行先进的现场大气测量，以调查与臭氧形成有关的问题以及可能损害人类健康的高浓度大气臭氧的出现。 密歇根湖臭氧研究包括由美国航天局和美国环保局支助的遥感活动。 该项目将通过大学、州和联邦利益攸关方之间的合作，为大气化学研究生和本科生提供培训，并建设区域大气科学能力。（1）确定与臭氧有关的主要化学品的浓度和形态（挥发性有机化合物（VOC）、氮氧化物（NOy）和VOC氧化产物）;（2）量化和解释上述物种在决定沿海臭氧的产生效率和NOx敏感性方面的作用;（3）确定富含生物和缺乏生物的区域空气团、城市羽流、局部排放物的微粒和臭氧影响，和航运的区域大气化学;和（4）诊断的缺点和先进的模式技能，模拟沿海气象和化学的关键方面，在当前和未来的大气。 该成果将提高预测可能对人类健康和环境有害的高臭氧事件的能力，获得该奖项支持的科学家将部署质子转移反应四极杆接口飞行时间质谱仪，碘化学电离飞行时间质谱仪，以及2017年夏天在莱克县锡安站点对气溶胶化学和物理特性的离线测量，伊利诺斯州位于伊利诺斯州海滩州立公园内，距离密歇根湖海岸线约1000米。 所收集的数据将为解决与沿海臭氧化学及其在当前化学品迁移模型中的代表性有关的重要问题提供所需的额外信息。

This project includes a multi-institutional team of scientists who are making advanced in-situ atmospheric measurements to investigate questions relevant to ozone formation and the occurrence of high concentrations of atmospheric ozone that can be damaging to human health. The Lake Michigan Ozone Study includes remote sensing activities being supported by NASA and the US EPA. The project will provide training for graduate and undergraduate researchers in atmospheric chemistry and build regional capacity in atmospheric science through a collaboration between university, state, and federal stakeholders.The specific objectives of the proposal are to: (1) establish concentrations and speciation of key ozone-related chemicals (volatile organic compounds (VOC), nitrogen oxides (NOy), and VOC oxidation products) at a representative coastal site where high ozone levels commonly occur; (2) quantify and explain the role of the above species in dictating the production efficiency and NOx sensitivity driving coastal ozone; (3) determine the particulate and ozone influences of biogenic-rich and biogenic-poor regional air masses, urban plumes, localized emissions, and shipping for regional atmospheric chemistry; and (4) diagnose shortcomings and advance model skill for simulating critical aspects of coastal meteorology and chemistry in the current and future atmosphere. The results will improve the ability to predict high ozone episodes that may be harmful to human health and the environment.The scientists supported by this award will deploy a Proton Transfer Reaction Quadrupole Interface Time-of-Flight Mass Spectrometer, an Iodine Chemical Ionization Time-of-Flight Mass Spectrometer, and off-line measurements of aerosol chemical and physical properties during the summer of 2017 at the Zion site in Lake County, Illinois located approximately 1000 m from the Lake Michigan coastline in the Illinois Beach State Park. The data collected will provide the additional information needed to address the important questions related to coastal ozone chemistry and its representation in current chemical transport models.