Source Characterization for Megacity Impacts on Regional and Global Environments-Mexico City Pollution Outflow Field Campaign (MIRAGE-Mex City)

作为MIRAGE-Mex（特大城市对区域和全球环境的影响）活动的一部分，该项目旨在调查生物质和生物燃料燃烧对墨西哥城整体空气质量的贡献。城乡污染源将通过部署机载和地面傅立叶变换红外（FTIR）痕量气体测量系统来表征。这些系统测量的化合物包括一氧化碳、二氧化碳、氧化亚氮、氨、臭氧、含氧挥发性有机化合物和碳氢化合物。为了方便测量生物质燃烧源，包括森林和家庭火灾，其中一个FTIR系统将安装在一辆面包车上，以便快速部署到非公路来源。另一个FTIR安装在手推车上，可以直接带到排放源。将测量这些源的特征发射因子和发射比，同时从一架小型飞机上记录相应的羽流样本。记录的排放量将与可用的生物燃料使用清单相结合，为墨西哥城地区和全国范围内的烹饪火灾创建一个新的、专门的排放清单。与赞比亚和巴西的测量相结合，将更新全球生物燃料使用的建议排放系数，并且将通过首次全面测量排放，改进对这些火灾对健康影响的评估。该奖项将为一名博士后提供培训机会，并加强与一所墨西哥大学的合作。

This project is designed to investigate the contribution of biomass and biofuel burning to the overall air quality of Mexico City as part of the MIRAGE-Mex (Megacity Impact on Regional and Global Environment) campaign. Urban-rural sources of pollution will be characterized by deploying airborne and ground-based Fourier Transform Infrared (FTIR) trace gas measurement systems. The compounds measured by these systems include carbon monoxide, carbon dioxide, nitrous oxide, ammonia, ozone, oxygenated volatile organic compounds, and hydrocarbons.To facilitate measurements of biomass burning sources, both forest and domestic fires, one of the FTIR systems will be mounted on a van for rapid deployment to off-road sources. Another FTIR is mounted on a cart and can be brought directly to the emission sources. Signature emission factors and emission ratios will be measured for these sources, while corresponding plume samples will be recorded from a small aircraft.The recorded emissions will be combined with available biofuel use inventories to create a new, speciated emissions inventory for cooking fires in the Mexico City area and nationwide. Integration with measurements in Zambia and Brazil will update the recommended emission factors for global biofuel use, and an improved assessment of the health effects of these fires will result from the first-ever comprehensive measurement of the emissions. The award will provide training opportunities for a postdoctoral associate, and enhance collaborations with a Mexican University.