Commercial Aircraft Engine Emissions Characterization of in-Use Aircraft at Hartsfield-Jackson Atlanta International Airport
| Autor: | Prem Lobo, Timothy B. Onasch, John T. Jayne, Donald E. Hagen, S. C. Herndon, Richard C. Miake-Lye, Philip D. Whitefield, Gregg G Fleming |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Environmental Science & Technology. 42:1877-1883 |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/es072029+ |
| Popis: | The emissions from in-use commercial aircraft engines have been analyzed for selected gas-phase species and particulate characteristics using continuous extractive sampling 1–2 min downwind from operational taxi- and runways at Hartsfield-Jackson Atlanta International Airport. Using the aircraft tail numbers, 376 plumes were associated with specific engine models. In general, for takeoff plumes, the measured NOx emission index is lower (∼18%) than that predicted by engine certification data corrected for ambient conditions. These results are an in-service observation of the practice of “reduced thrust takeoff”. The CO emission index observed in ground idle plumes was greater (up to 100%) than predicted by engine certification data for the 7% thrust condition. Significant differences are observed in the emissions of black carbon and particle number among different engine models/technologies. The presence of a mode at ∼65 nm (mobility diameter) associated with takeoff plumes and a smaller mode at ∼25 nm ass... |
| Databáze: | OpenAIRE |
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