Study Discusses Dispersion of Aircraft Emissions and Aircraft Exhaust Plumes
9 September 2026 | ZEROGeoengineering.com | Illustrating how our atmosphere is viewed as an experimental physics and chemistry laboratory by academics and their partners in government and industry.
The article below, “Aircraft Emissions, Their Plume-Scale Effects, and the Spatio-Temporal Sensitivity of the Atmospheric Response: A Review,” examines topics such as common aircraft emissions, the formation of aerosol in aircraft plumes, mitigating aviation’s non-CO2 climate impacts, as well as optimization of flight routes. Emissions described in the paper as “contrails” are not just water vapor (H2O), but according to the study, also include pollutants such as sulfur (SO2, SO3), sulfuric acid (H2SO4), soot and metal particles, particulate matter, and nitrogen oxide gases (NOx), which are known to contribute to smog, acid rain, and respiratory illness.
Tait, K.N.; Khan, M.A.H.; Bullock, S.; Lowenberg, M.H.; Shallcross, D.E. Aircraft Emissions, Their Plume-Scale Effects, and the Spatio-Temporal Sensitivity of the Atmospheric Response: A Review. Aerospace 2022, 9, 355. https://doi.org/10.3390/aerospace9070355
“This review paper covers the generation of emissions and their characteristic dispersion, air traffic distribution, local and global climate impact, and operational mitigation solutions, all aimed at improving scientific
awareness of aviation’s non-CO2 climate impact.”
“Figure 2. Aircraft exhaust plume dynamical regimes.”
“Figure 12. Schematic overview of climate forcing mechanisms induced by aircraft emissions.”
“Coagulation commonly occurs in aircraft wakes between volatile particles such as H2SO4 /H2O particles and soot aerosol, forming a mixed H2SO4/H2O-soot aerosol (see Figure 15).” 
“Funding
This research was funded by the Engineering and Physical Sciences Research Council (EPSRC grant number EP/T517872/1) as part of a Doctoral Training Partnership (DTP). M.A.H.K. was supported through a Natural Environment Research Council (NERC) Discipline Hopping for Environmental Solutions grant.”
Abbreviations
Link To Full Document Aircraft Emissions, Their Plume-Scale Effects, and theSpatio-Temporal Sensitivity of the Atmospheric Response: A Review
ZG readers will recall that creating a persistent aerosol emission is an operational decision, as acknowledged in FAA’s 2024 report on aviation induced cloudiness. The framing of the topic is on routing optimization as if the issue is an efficiency problem, instead of an emissions problem.
The physics is well understood, but regulatory frameworks to preserve our clean atmosphere are lacking. Contact policymakers to protect our sky HERE
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