CAREER: Nocturnal Chemistry in the Urban Boundary Layer: Investigation of Heterogeneous Surface Chemistry and Chemical-Transport Processes

职业：城市边界层的夜间化学：异质表面化学和化学传输过程的研究

• 批准号: 0348674
• 负责人: Jochen Stutz
• 金额: $ 62.3万
• 依托单位: University of California-Los Angeles
• 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: 2004-04-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0348674&HistoricalAwards=false
• 关键词: CAREER; Nocturnal; Chemistry; Urban; Boundary

This project will investigate and quantify the importance of nocturnal atmospheric dynamics and chemistry in an urban environment, with emphasis on the chemistry of reactive oxidized oxides of nitrogen, oxidizing radicals and heterogeneous reaction processes. During two field studies differential optical absorption spectroscopy (DOAS) along with ancillary measurements provided by in situ instruments (including an aerosol mass spectrometer), GPS radiosondes, and a light detection and ranging (lidar) will be used to characterize nighttime chemistry and mixing. One- and three-dimensional modeling experiments will place those observations in a policy-relevant context by defining the role of nocturnal vertical mixing processes in controlling chemical reactions and air quality in urban areas. The broader science impact of this research will be an improved understanding of nighttime chemical reactions and mixing processes so that they can be emulated in a more representative fashion within urban and regional air quality models. Such improvements will lead to more effective control strategies and informed policy decisions in the future. In addition to direct mentoring of graduate and undergraduate student research the P.I. will integrate his research into a number of education and community outreach initiatives. Support is requested for one graduate student and this project will contribute substantially to their professional training.

该项目将调查和量化夜间大气动力学和化学在城市环境中的重要性，重点是氮的活性氧化物，氧化自由基和非均相反应过程的化学。 在两项实地研究中，将使用差分光学吸收光谱法（DOAS）沿着以及现场仪器（包括气溶胶质谱仪）、全球定位系统无线电探空仪和光探测和测距（激光雷达）提供的辅助测量来表征夜间化学和混合。 一维和三维模拟实验将通过确定夜间垂直混合过程在控制城市地区化学反应和空气质量方面的作用，将这些观测结果置于与政策相关的背景下。 这项研究的更广泛的科学影响将是改善对夜间化学反应和混合过程的理解，以便在城市和区域空气质量模型中以更具代表性的方式进行模拟。 这些改进将导致今后更有效的控制战略和知情的政策决定。 除了直接指导研究生和本科生的研究，P.I.将把他的研究纳入一些教育和社区外展计划。 要求为一名研究生提供支助，该项目将大大有助于他们的专业培训。