Small- and medium-scale effects of high-flying aircraft exhausts on the atmospheric composition
Item
Title (Dublin Core)
Small- and medium-scale effects of high-flying aircraft exhausts on the atmospheric composition
Description (Dublin Core)
Following numerous model studies of the global impacts of sub- and supersonic aircraft on the atmosphere, this paper assesses the separate aircraft engine exhaust effects of the 45°N cruise flight and at the 10- and 18-km levels of the July atmosphere. A box diffusion photochemical model in the cross-section plane of the flight trajectory is used to compute the effects of gas-phase and heterogeneous reactions on the condensation trail particles in the troposphere, and on the sulphate aerosols in the stratosphere. The enhanced horizontal dispersion of the exhaust plume is considered in the model. A significant but short term depletion of ozone is predicted, which is 99% restored in about 1 h in the wide plume with enhanced horizontal dispersion, but requires more than 24 h in the narrow plume without it. The oxidation rate of NO and NO<sub>2</sub> into the HNO<sub>3</sub> depends on the OH content in the exhausts and varies in all the cases. The heterogeneous photochemistry has only a small influence on the initial evolution of N<sub>2</sub>O<sub>5</sub> and HO<sub>2</sub> in the plume.
Creator (Dublin Core)
Karol, I. L.
Ozolin, Y. E.
Date (Dublin Core)
2018-09-27
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.1007/s00585-994-0979-2
https://angeo.copernicus.org/articles/12/979/1994/
Source (Dublin Core)
eISSN: 1432-0576
Language (Dublin Core)
eng
