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

职业：森林和海洋环境中夜间氮氧化物化学的原位限制

• 批准号: 0846183
• 负责人: Joel Thornton
• 金额: $ 79.82万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-06-15 至 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0846183&HistoricalAwards=false
• 关键词: CAREER; Situ; Constraints; Nocturnal; Nitrogen

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.

该奖项是根据2009年《美国复苏和再投资法》(公法111-5)资助的。该项目的研究目标是通过实地观察、实验室研究和建模，阐明夜间氮氧化物化学在受污染的海洋边界层(MBL)和乡村森林中的机制和重要性。在两个MBL现场活动期间，将同时在现场测量五氧化二氮(N2O5)和氯化硝基(ClNO2)浓度，以详细了解N2O5产生ClNO2的情况，并特别关注船舶羽流化学。在这些MBL活动中，以及在加州农村松林的另一场活动中，一种新开发的可现场部署的仪器将首次提供对N2O5和NO3反应性的直接现场测量。将进行详细的气体-气溶胶化学盒模拟，以验证ClNO2产生机制的假设，并探索这种氯原子源对沿海和偏远海洋地区化学的影响。该教育计划旨在激励和吸引华盛顿大学(UW)本科生、美国原住民高中生和K-12教师对地球系统科学的欣赏和实践。在毗邻奥林匹克国家公园的Makah部落土地上将开展一项活动，Makah高中生将与威斯康星州大学的本科生合作，收集和分析普吉特湾船舶交通及其与空气质量的联系。这些数据将被整合到两门本科大气化学课程的探究性分析练习中。首席调查员还将与奥林匹克公园研究所合作开发课程材料，用于他们的K-12教师培训计划。