Collaborative Research: Characterization of Sources and Processes of Organic Fine Particulate Matter in Mexico City

该项目将提供2003年和即将到来的2006年MCMA（墨西哥城大都市区）活动的详细数据分析。2003年的数据收集得到了美国能源部（DOE）和美国国家科学基金会（NSF）的支持，2006年的地面测量（该项目的部分基础）将得到美国能源部的支持。MCMA-2006将是MILAGRO（墨西哥城倡议-地方和全球研究观测）综合实地项目的一部分。待分析的数据集包括细初级颗粒的发射通量特征、高时间分辨环境细颗粒（初级和次级）的化学成分、尺寸分布和质量负荷；以及对二次气溶胶前体气体排放源和环境浓度的广泛实时测量。这一分析将提供机动车一级细颗粒物排放和环境二级细颗粒物大气光化学生产的作用和相对重要性的详细信息。测量以及城市尺度和区域模式将解决运输、混合、化学和损失过程对有机气溶胶浓度和性质演变的影响问题。该项目将有助于培训一些学生，并促进美国和墨西哥研究机构之间的合作。

This project will provide detailed analysis of data from the MCMA (Mexico City Metropolitan Area) 2003 and upcoming 2006 campaigns. The data collection in 2003 was supported by the Department of Energy (DOE) and NSF, and the 2006 ground-based measurements, on which this project is partly based, will be supported by the DOE. MCMA-2006 will be part of the MILAGRO (Mexico City Initiative - Local and Global Research Observations) integrated field program. The dataset to be analyzed includes the characterization of emission fluxes of fine primary particles, highly time-resolved ambient fine particles (primary and secondary) chemical composition, size distributions, and mass loadings; and extensive real-time measurements of secondary aerosol precursor gas emission sources and ambient concentrations. This analysis will provide detailed information on the roles and relative importance of primary motor vehicle fine particle emissions and atmospheric photochemical production of ambient secondary fine particles. Measurements as well as urban-scale and regional models will address the question of the influence of transport, mixing, chemistry, and loss processes on the evolution of organic aerosol concentrations and properties. This project will contribute to the training of a number of students, and foster collaborations between U.S. and Mexican research institutions.