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

该项目将对2003年和即将到来的2006年运动的数据进行详细分析。2003年的数据收集得到了能源部和国家科学基金会的支持，2006年的地面测量-本项目的部分依据-将得到能源部的支持。MCMA-2006将是MILAGRO（墨西哥城倡议-地方和全球研究观测）综合实地方案的一部分。待分析的数据集包括精细初级颗粒的排放通量的表征、高度时间分辨的环境精细颗粒（初级和次级）化学成分、尺寸分布和质量负载;以及次级气溶胶前体气体排放源和环境浓度的广泛实时测量。该分析将提供有关主要机动车细颗粒物排放和大气二次细颗粒物的大气光化学产生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型将解决运输，混合，化学和损失过程对有机气溶胶浓度和性质的演变的影响的问题。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.