Articles | Volume 20, issue 9
Atmos. Chem. Phys., 20, 5697–5727, 2020
https://doi.org/10.5194/acp-20-5697-2020
Atmos. Chem. Phys., 20, 5697–5727, 2020
https://doi.org/10.5194/acp-20-5697-2020

Research article 13 May 2020

Research article | 13 May 2020

The role of plume-scale processes in long-term impacts of aircraft emissions

Thibaud M. Fritz et al.

Model code and software

APCEMM T. Fritz https://github.com/fritzt/APCEMM

fritzt/APCEMM: APCEMM_v5.0.0 T. Fritz https://doi.org/10.5281/zenodo.3755701

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Short summary
Aircraft exhaust drives formation of ozone and is a dominant anthropogenic influence in the upper troposphere. These impacts are mitigated by non-linear chemistry inside the aircraft plume, which cuts off part of the ozone production pathway and reduces the long-term impact of aircraft in a way which is not captured by current models. The ice clouds which form in aircraft exhaust ("contrails") also play a role, converting emitted nitrogen oxides into more stable forms such as nitric acid.
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