Journal
ATMOSPHERE
Volume 13, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/atmos13081230
Keywords
emissions; aircraft; particulate matter; dispersion; regulations
Funding
- RAPTOR H2020-EU.3.4.5.10 Clean Sky 2 Joint undertaking under the European Union's Horizon 2020 research and innovation program [863969]
- H2020 Societal Challenges Programme [863969] Funding Source: H2020 Societal Challenges Programme
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This review article discusses the significance of particulate emissions from aircraft engines on ambient ultrafine particle concentration and identifies gaps in current knowledge. The article also reviews the current methods for emission inventory and dispersion modeling, and highlights the need for improvements and further research.
The contribution of aircraft operations to ambient ultrafine particle (UFP) concentration at and around airports can be significant. This review article considers the volatile and non-volatile elements of particulate matter emissions from aircraft engines, their characteristics and quantification and identifies gaps in knowledge. The current state of the art emission inventory methods and dispersion modelling approaches are reviewed and areas for improvement and research needs are identified. Quantification of engine non-volatile particulate matter (nvPM) is improving as measured certification data for the landing and take-off cycle are becoming available. Further work is needed: to better estimate nvPM emissions during the full-flight; to estimate non-regulated (smaller) engines; and to better estimate the emissions and evolution of volatile particles (vPM) in the aircraft exhaust plume. Dispersion modelling improvements are also needed to better address vPM. As the emissions inventory data for both vPM and nvPM from aircraft sources improve, better estimates of the contribution of aircraft engine emissions to ambient particulate concentrations will be possible.
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