Seasonal Trends of Springtime Ozone, Reactive Nitrogen, Carbon Monoxide, and Hydrocarbons Over North America and the Effects of Anthropogenic Emissions

北美地区春季臭氧、活性氮、一氧化碳和碳氢化合物的季节变化趋势及人为排放的影响

• 批准号: 0343854
• 负责人: Yuhang Wang
• 金额: $ 35.79万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-02-15 至 2008-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0343854&HistoricalAwards=false
• 关键词: Seasonal; Trends; Springtime; Ozone; Reactive

This project continues modeling analyses of the observations acquired during the Tropospheric Ozone Production about the Spring Equinox (TOPSE) experiment in order to better understand controlling influences on the seasonal cycle of tropospheric ozone at high northern latitudes. Seasonal trends, dynamics and latitudinal distributions of ozone and selected photochemically important trace gases measured from aircraft during TOPSE will be characterized, and further analyzed to identify specific factors controlling the observational data. By combining multi-scale modeling approaches global-to-regional coupled chemistry-transport simulations will be conducted to better understand the relative contributions and interplay between natural and anthropogenic precursor emission sources on observed tropospheric ozone - still a critical issue with respect to atmospheric chemistry on larger spatial scales. Results from this study will improve our understanding of how natural and human-induced emissions are affecting the atmosphere and a better characterization on the seasonal cycle of tropospheric ozone at high northern latitudes will offer improved insight on how human activity impacts the chemistry of the troposphere and global climate. Two graduate students will be supported to conduct the modeling and analyses under the direction of the P.I., as will undergraduate students who participate in the project through a program of intensive summer research experience.

该项目继续对春分对流层臭氧生成实验期间获得的观测数据进行建模分析，以便更好地了解控制对北方高纬度对流层臭氧季节性循环的影响。 将对TOPSE期间从飞机上测得的臭氧和某些光化学上重要的微量气体的季节趋势、动态和纬度分布进行表征，并进一步分析，以确定控制观测数据的具体因素。 通过结合多尺度建模方法，将进行全球到区域的耦合化学传输模拟，以更好地了解自然和人为前体排放源对观测到的对流层臭氧的相对贡献和相互作用----这仍然是较大空间尺度上大气化学的一个关键问题。 这项研究的结果将提高我们对自然和人为排放如何影响大气的理解，更好地描述北方高纬度地区对流层臭氧的季节性循环将使我们更好地了解人类活动如何影响对流层和全球气候的化学。 将支持两名研究生在P.I.的指导下进行建模和分析，通过密集的夏季研究经验计划参与该项目的本科生也将如此。