SGER: Impacts of Air Pollution Controls on Primary and Secondary Aerosols during CAREBEIJING

在本项目中，将于2008年7月至9月在北京空气质量研究活动（CAREBEIJING）期间使用Aerodyne高分辨率飞行时间气溶胶质谱仪（HR-ToF-AMS）对非难降解亚微米气溶胶颗粒的尺寸分辨组成进行表征。CAREBEIJING是一个国际项目，旨在研究2008年奥运会期间车辆限制和城市排放控制对北京空气质量的影响。得到的环境细颗粒组成和高分辨率质谱数据集对了解高密度城市和工业区大气气溶胶的来源、特征和光化学过程具有重要价值。由于奥运会期间车辆交通将受到限制，因此将有一个独特的机会来研究空气污染控制对大城市细颗粒物化学、物理和二次形成机制的影响。更广泛的影响包括对北京及周边地区居民空气质量的深入了解。这项研究的结果将为制定空气质量管理策略提供信息，以减少气溶胶对人类健康、生态系统和气候的不利影响。对在中国的合作者进行仪器操作和数据分析方面的培训，将为他们今后研究大气化学和空气质量做好准备。

In this project, the size-resolved composition of non-refractory submicron aerosol particles will be characterized with an Aerodyne High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) during the Campaigns of Air Quality Research in Beijing (CAREBEIJING) from July to September, 2008. CAREBEIJING is an international project designed to study the impact of vehicle restrictions and urban emission controls on air quality in Beijing during the 2008 Olympic Games. The resulting data set of time- and size-resolved ambient fine particle composition and high-resolution mass spectra should be valuable for understanding the sources, characteristics, and photochemical processes of atmospheric aerosols in the high-density urban and industrial area. Because vehicle traffic will be restricted during the Olympics, there will be a unique opportunity to examine the impacts of air pollution control on fine particle chemistry, physics, and secondary formation mechanisms in a large megacity.Broader impacts include insights into air quality for residents of Beijing and surrounding regions. Findings from this study will inform the development of air quality management strategies to reduce the adverse impacts of aerosols on human health, ecosystems, and climate. Training in operation of instrumentation and data analysis for collaborators in China will prepare them for future studies of atmospheric chemistry and air quality.