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，以调查与臭氧形成和可能损害人类健康的高浓度大气臭氧的发生有关的问题。密歇根湖臭氧研究包括由NASA和美国环保局支持的遥感活动。该项目将通过大学、州和联邦利益攸关方之间的合作，为大气化学的研究生和本科生提供培训，并建设大气科学的区域能力。该提案的具体目标是：(1)在臭氧水平普遍较高的具有代表性的沿海地点建立与臭氧有关的关键化学品(挥发性有机化合物(VOC)、氮氧化物(NOY)和VOC氧化产物)的浓度和形态；(2)量化和解释上述物种在决定沿海臭氧生产效率和NOx敏感性方面的作用；(3)确定富生物和贫生物的区域气团、城市羽流、局部排放和航运对区域大气化学的颗粒物和臭氧的影响；以及(4)诊断缺陷和提高模拟当前和未来大气中沿海气象和化学的关键方面的模式技能。这一结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。在该奖项的支持下，科学家们将于2017年夏天在伊利诺伊州锡安遗址部署质子转移反应四极杆界面飞行时间质谱仪、碘化学电离飞行时间质谱仪以及气溶胶化学和物理性质的离线测量。莱克县，距离密歇根湖海岸线约1000米，位于伊利诺伊海滩州立公园内。所收集的数据将提供必要的补充信息，以解决与沿海臭氧化学有关的重要问题及其在当前化学品运输模式中的表现。

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 Illinois? Lake County, 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.