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

本项目将在2008年7月至9月北京空气质量研究活动期间，利用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物的粒径分辨组成进行表征。 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。 由此产生的数据集的时间和大小分辨的环境细颗粒物的组成和高分辨率质谱应该是有价值的了解在高密度的城市和工业区的大气气溶胶的来源，特点和光化学过程。 由于在奥运会期间车辆交通将受到限制，这将是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了解。 这项研究的结果将为空气质量管理战略的制定提供信息，以减少气溶胶对人类健康，生态系统和气候的不利影响。 为中国的合作者提供仪器操作和数据分析方面的培训，将使他们为今后的大气化学和空气质量研究做好准备。

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.