CAREER: In Situ Constraints on Nocturnal Nitrogen Oxide Chemistry in Forested and Marine Environments

该项目的研究目标是通过野外观测、实验室研究和模拟，阐明夜间氮氧化物化学在污染海洋边界层（MBL）和农村森林中的作用机制和重要性。 同时，在现场，五氧化二氮（N2 O 5）和硝基氯（ClNO 2）浓度的测量将在两个MBL现场活动，以制定详细的了解ClNO 2生产的N2 O 5，特别注意船舶羽流化学。 在这些MBL活动，并在农村加州松林的一个额外的活动，一个新开发的，现场部署的设备将提供第一个直接原位测量的N2 O 5和NO3的反应。 详细的气体气溶胶化学箱模拟将进行测试假设的ClNO 2生产机制，并探讨这种氯原子源对沿海和偏远的海洋区域的化学的影响。该教育计划旨在激发和参与华盛顿大学（UW）的本科生，美国原住民高中学生和K-12教师在地球系统科学的欣赏和实践。 一场运动将在毗邻奥林匹克国家公园的马卡部落土地上举行，马卡高中高年级学生将与华盛顿大学的本科生合作，收集和分析普吉湾的船舶交通及其与空气质量的关系。 这些数据将被纳入两门本科大气化学课程的调查分析练习。 首席研究员还将与奥林匹克公园研究所合作，开发用于K-12教师培训计划的课程材料。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).The research objectives of this project are to elucidate the mechanisms and importance of nocturnal nitrogen oxide chemistry in the polluted marine boundary layer (MBL) and rural forests via field observations, laboratory studies, and modeling. Simultaneous, in situ, measurements of dinitrogen pentoxide (N2O5) and nitryl chloride (ClNO2) concentrations will be made during two MBL field campaigns to develop a detailed understanding of ClNO2 production by N2O5, with special attention paid to ship plume chemistry. In these MBL campaigns, and in an additional campaign in a rural California pine forest, a newly developed, field-deployable apparatus will provide the first direct in situ measurements of N2O5 and NO3 reactivity. Detailed gas-aerosol chemistry box modeling will be performed to test hypotheses of ClNO2 production mechanisms, and to explore the impacts of this chlorine atom source on the chemistry of coastal and remote marine regions.The educational plan aims to inspire and engage University of Washington (UW) undergraduates, Native American high school students, and K-12 teachers in the appreciation and practice of Earth system science. A campaign will take place on Makah tribal lands adjacent to Olympic National Park, in which Makah high school seniors will be partnered with UW undergraduates in the collection and analysis of Puget Sound ship traffic and its connection to air quality. The data will be integrated into inquiry-based analysis exercises for two undergraduate-level atmospheric chemistry courses. The principal investigator will also work with the Olympic Park Institute to develop curriculum materials for use in their K-12 teacher training programs.