Emissions and Chemistry from the Tianjin Region in China

中国天津地区的排放和化学

• 批准号: 0941129
• 负责人: Timothy VanReken
• 金额: $ 20.17万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-01 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0941129&HistoricalAwards=false
• 关键词: Emissions; Chemistry; Tianjin; Region; China

The principal investigators (PIs) plan to carry out an exploratory research campaign in a mega-city environment in Tianjin, China (near Beijing). The PIs will focus on three topics: 1) accuracy and completeness of the gas phase emission inventory with an emphasis upon understanding emission sector contributions; 2) analysis of ozone indicator species, photochemical processing of volative organic compounds (VOCs) and related features of VOC/NOx (nitrogen oxide) limitations in the region; and 3) investigation of particulate emissions and aging with an emphasis upon partitioning of semi-volatile compounds (SVOC) between gas and vapor phases. The end products will be a better understanding of ozone and aerosol formation and fate within this megacity region and a better basis for placing the impact of this megacity in perspective with respect to future change in China. In the three week field program, the PIs will operate from a tall flux tower. This will involve chemical speciation of ambient VOCs and size distributions of aerosols coupled with NOy, CO, SO2, and O3 measurements and boundary layer lidar sensing. This work will be carried out in collaboration with scientists from the local Tianjin University as well as with NCAR scientists, who will be at the field site during the same time period (September 2010).Gaining an initial understanding of atmospheric chemical cycles within this region will benefit overall understanding of megacity impacts on regional and global chemistry and thus benefit societal decisions regarding global change. The work will also target undergraduate and graduate student education through the PIs' NSF REU atmospheric chemistry program and a new and novel Atmospheric Policy Trajectory (APT) program.

主要研究者（PI）计划在中国天津（靠近北京）的特大城市环境中开展探索性研究活动。 初步研究将集中于三个主题：1）气相排放清单的准确性和完整性，重点是了解排放部门的贡献; 2）臭氧指示物质的分析，挥发性有机化合物的光化学处理以及挥发性有机化合物/氮氧化物的相关特征（氮氧化物）的限制;和3）颗粒排放和老化的研究，重点是半挥发性化合物（SVOC）在气相和气相之间的分配。最终产品将是更好地了解这一特大城市区域内臭氧和气溶胶的形成和归宿，并为正确看待这一特大城市对中国未来变化的影响奠定更好的基础。 在为期三周的实地项目中，PI将在一个高大的通量塔上操作。这将涉及环境挥发性有机化合物的化学形态和气溶胶的尺寸分布，以及NOy，CO，SO2和O3测量和边界层激光雷达传感。 这项工作将与当地天津大学的科学家以及NCAR的科学家合作进行，他们将在同一时间段（2010年9月）在现场进行。获得对该地区大气化学循环的初步了解将有助于全面了解特大城市对区域和全球化学的影响，从而有利于有关全球变化的社会决策。这项工作还将通过PI的NSF REU大气化学计划和一个新的新颖的大气政策轨迹（APT）计划来针对本科生和研究生教育。