Tracking Urban Nitrous Acid (HONO) Emissions and Secondary Production in the Great Lakes Region during Michigan-Ontario Ozone Source Experiment (MOOSE)

该项目为密歇根-安大略省臭氧源实验（MOOSE）现场活动做出了贡献，该活动计划于2021年和2022年夏季在底特律大都会举行。MOOSE是由密歇根州环境、大湖和能源部（EGLE）赞助的一项合作项目，包括加拿大政府、美国国家海洋和大气管理局、美国国家航空航天局、美国环保署和美国农业部的参与。该运动的目标是提高对该地区臭氧空气污染产生的来源和化学成分的认识。这个由NSF支持的项目的研究包括对假设的测试，以更好地理解HONO形成的异质途径，包括稳定同位素的测量，这将作为一个独特的工具，严格限制活性氮的来源，化学加工途径，以及基于它们各自的同位素特征的汇。这项工作预计将有助于澄清HONO在臭氧产生中的作用。该项目包括对社区多尺度空气质量（CMAQ）化学运输模型进行改进，这将使该模型的用户受益。该奖项反映了美国国家科学基金会的法定使命，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。

This project contributes to the Michigan-Ontario Ozone Source Experiment (MOOSE) field campaign scheduled to take place in the summers of 2021 and 2022 over metropolitan Detroit. MOOSE is a collaborative effort sponsored by the Michigan Department of Environment, Great Lakes, and Energy (EGLE), and includes participation from the Canadian government, NOAA, NASA, USEPA and the USFS. The goal of the campaign is to improve the understanding of the sources and chemistry associated with the production of ozone air pollution in the region.The research in this project supported by NSF includes the testing of hypotheses to better understand heterogeneous pathways to HONO formation and includes the measurement of stable isotopes that will serve as a unique tool to rigorously constrain sources, chemical processing pathways, and sinks of reactive nitrogen species based upon their respective isotopic signatures. This effort is expected to help to clarify the role of HONO in ozone production. The project includes improvements that will be made to the Community Multiscale Air Quality (CMAQ) chemical transport model that will benefit users of the model.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.