Geophysical Research Letters · 1997 · 41 citations · 17 references
Natural SciencesAerospace EngineeringChemistryAir PollutionAtmospheric ChemistryAtmospheric ScienceAerosol ChemistryAir Pollutant EmissionsAir PollutantsAtmospheric Oxidation ProcessesEmission InventoriesNitrogen OxidesAtmospheric Chemistry ModelingEmission PlumesNitrogen Oxide Conversion ProcessesNitrogen Oxide EmissionsNitrogen Oxide ModelingNitrogen Oxides EmissionsNitrogen Oxides FormationNitrogen Oxides Modeling
A parametrization is needed in global models to account for the sub‐grid chemical processes taking place in the plume of an aircraft, since these processes can cause the conversion of a considerable amount of the emitted NO x to reservoir species, such as HNO 3 . For this purpose, the chemical conversions of nitrogen oxides in the plume of an aircraft were investigated with a newly developed model. The calculated fractions of different nitrogen compounds formed within 24 hours in the exhaust plumes, differentiated for the global domain and season, were used to modify the original aircraft NO x emissions from the ANCAT emission inventory to emissions of various nitrogen compounds and we applied these to the global Chemistry Transport Model KNMI (CTMK). The results obtained imply that neglect of aircraft plume processes in global modeling leads to an overestimation of the NO x and O 3 perturbations. Compared with a CTMK calculation with unmodified aircraft NO x emissions, the NO x perturbations in the North Atlantic flight corridor (NAFC) decreased by 15%–55%, due to conversions in the plumes. The resulting O 3 perturbation decreased by 15%–25%.
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Emission Measurements of the Concorde Supersonic Aircraft in the Lower Stratosphere
D. W. Fahey, E. R. Keim, K. A. Boering et al. · Science · 1995 · 195 citations