We present ground-based, advected aircraft engine emissions from flights taking off at Los Angeles International Airport. 275 discrete engine take-off plumes were observed on 18 and 25 May 2014 at a distance of 400 m downwind of the runway. CO2 measurements are used to convert the aerosol data into plume-average emissions indices that are suitable for modelling aircraft emissions. Total and non-volatile particle number EIs are of order 1016–1017 kg−1 and 1014–1016 kg−1, respectively. Black-carbon-equivalent particle mass EIs vary between 175–941 mg kg−1 (except for the GE GEnx engines at 46 mg kg−1). Aircraft tail numbers recorded for each take-off event are used to incorporate aircraft- and engine-specific parameters into the data set. Data acquisition and processing follow standard methods for quality assurance. A unique aspect of the data set is the mapping of aerosol concentration time series to integrated plume EIs, aircraft and engine specifications, and manufacturer-reported engine emissions certifications. The integrated data enable future studies seeking to understand and model aircraft emissions and their impact on air quality.
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机译：我们介绍了在洛杉矶国际机场起飞的地面对地面的航空发动机排放。 2014年5月18日至25日，在顺风道400 m处观察到275个离散的发动机起飞烟羽。 CO2测量用于将气溶胶数据转换为适合模拟飞机排放的羽流平均排放指数。总和非易失性粒子数量EI的数量级为10 16 –10 17 kg -1 和10 14 分别为–10 16 kg −1 。等效于黑碳的粒子质量EIs在175–941 mg kg -1 之间变化（GE GEnx发动机的46 mg kg -1 除外）。为每个起飞事件记录的飞机机尾号用于将飞机和引擎特定的参数合并到数据集中。数据采集和处理遵循标准方法进行质量保证。数据集的一个独特方面是将气溶胶浓度时间序列映射到集成羽流EI，飞机和发动机规格以及制造商报告的发动机排放证书。集成的数据使将来的研究可以寻求了解和模拟飞机排放物及其对空气质量的影响。
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