RAPID: Characterizing the Sources and Chemistry of Nitrogen Oxides, Nitrous Acid, and Particulate Nitrate during the AEROMMA Campaign

RAPID：表征 AEROMMA 活动期间氮氧化物、亚硝酸和颗粒硝酸盐的来源和化学性质

• 批准号: 2331252
• 负责人: Jiajue Chai
• 金额: $ 20万
• 依托单位: SUNY College of Environmental Science and Forestry
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-07-01 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2331252&HistoricalAwards=false
• 关键词: RAPID; Characterizing; Sources; Chemistry; Nitrogen

In this RAPID project, the isotopic signatures of nitrogen oxides (NOx) and nitrous acid (HONO) emitted from marine sources and in plumes where marine and urban emissions co-evolve will be characterized. Stable isotope techniques in combination with concentration measurements will be employed as part of the NOAA-supported Atmospheric Emissions and Reactions Observed from Megacities to Marine Areas (AEROMMA) field campaign in the New York City region. This research will provide data and information relevant for assessing effective mitigation strategies for ozone and secondary air pollution over the greater metropolitan NYC area.The stable isotopic composition measurements in this research will help to constrain the sources, sinks, and chemical processing pathways of reactive nitrogen (Nr) species using the isotopic signatures associated with these sources and processes. Field work will be performed at two ground sites: the NYC-CUNY urban site located in Upper Manhattan and the Yale Coastal site in Guilford, CT located downwind of the urban site. This effort includes the characterization and quantification, under different meteorological and pollution conditions, of nitrogen oxides (NOx), nitrous acid (HONO), nitric acid (HNO3), and particulate nitrate (p-NO3-) through measurements of emission factors, concentration profiles, and nitrogen and oxygen stable isotopic composition in high time resolution. The project includes the participation of both a graduate and an undergraduate student.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.

在这个快速的项目中，从海洋来源和海洋和城市排放共同进化的羽流和羽流中发出的氮氧化物（NOX）和亚硝酸（HONO）的同位素特征。稳定的同位素技术与浓度测量相结合，将用作NOAA支持的大气排放和纽约市地区大气区（Aeromma）田间运动的反应的一部分。这项研究将提供有关在更大的大都会区域评估臭氧和二级空气污染的有效缓解策略相关的数据和信息。这项研究中稳定的同位素组成测量值将有助于约束反应性氮的来源，水槽和化学处理途径（NR）使用与这些来源和过程相关的同位素特征的物种。现场工作将在两个地面地点进行：位于曼哈顿上层的NYC-Cuny Urban遗址和位于城市遗址下风的吉尔福德的耶鲁沿海地区。这项工作包括在不同的气象和污染条件下的表征和定量，氮氧化物（NOX），亚硝酸（HONO），硝酸（HNO3）和颗粒硝酸盐（P-NO3-），通过测量发射因子，浓度，轮廓，氮和氧稳定的同位素组成在高时间分辨率中。该项目包括研究生和本科生的参与。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的审查标准，认为值得通过评估来获得支持。