Measurement of Urban Volatile Organic Compound Fluxes during Megacity Impacts on Regional and Global Environments (MIRAGE) in Mexico City

该项目涉及在墨西哥城污染流出场运动--大城市对区域和全球环境的影响(MiraGE)期间对墨西哥城中心的非甲烷碳氢化合物、一氧化碳和NOY通量进行测量。将采用一系列通量测量技术来测试墨西哥城挥发性有机化合物排放清单的有效性。这些技术包括使用快速烯烃传感器测量烯烃通量，使用质子转移反应质谱仪测量芳烃和选定的含氧挥发性有机化合物的通量，以及使用新型分离涡流累积系统测量可通过气相色谱/火焰电离检测进行分析的其他单个挥发性有机化合物的通量。还将包括一氧化碳、二氧化碳、潜热和显热的通量。研究生和本科生将在该项目的赞助下接受培训，使他们接触到与发展中国家特大城市有关的环境问题。学生将参与实地考察项目，并对实地考察项目的数据进行分析。这项工作的结果将被用于说明超大城市对环境的影响，作为华盛顿州立大学本科生和研究生课程的一部分。该数据库将成为大城市对区域和全球环境的影响数据档案的一部分。

This project involves making measurements of non-methane hydrocarbon, carbon monoxide and NOy fluxes in the center of Mexico City during the Megacity Impacts on Regional and Global Environments (MIRAGE), the Mexico City Pollution Outflow Field Campaign. A range of flux measurement techniques will be employed to test the validity of the emissions inventory for volatile organic compounds in Mexico City. These techniques include the use of a Fast Olefin Sensor to measure olefin fluxes, a Proton Transfer Reaction Mass Spectrometer to measure fluxes of aromatics and selected oxygenated volatile organic compounds, and a novel disjunct eddy accumulation system to measure fluxes of other individual volatile organic compounds amenable to analysis with gas chromatography/flame ionization detection. Fluxes of carbon monoxide, carbon dioxide, and latent and sensible heat flux will also be included.Graduate and undergraduate students will receive training under the auspices of this project, exposing them to environmental issues associated with a megacity located in a developing country. Students will be involved in the field program and in analysis of the data from the field program. Results from the work will be used to illustrate megacity environmental impacts as part of undergraduate and graduate classes at Washington State University. The data base will become part of the Megacity Impacts on Regional and Global Environments data archive.