The generation of sulfuric acid aerosols in aircraft exhaust has emerged as a critical issue in determining the impact of supersonic aircraft on stratospheric ozone. It has long been held that the first step in the mechanism of aerosol formation is the oxidation of SO2 emitted from the engine by OH in the exhaust plume. We report in situ measurements of OH and HO2 in the exhaust plumes of a supersonic (Air France Concorde) and a subsonic (NASA ER-2) aircraft in the lower stratosphere. These measurements imply that reactions with OH are responsible for oxidizing only a small fraction of SO2 (2%), and thus cannot explain the large number of particles observed in the exhaust wake of the Concorde
In situ measurements of hydrogen, nitrogen, and chlorine radicals obtained in the lower stratosphere...
International audienceImpacts of NOx, H2O and aerosol emissions from a projected 2050 aircraft fleet...
International audienceIn this work we focus on the direct radiative forcing (RF) of black carbon (BC...
The generation of sulfuric acid aerosols in aircraft exhaust has emerged as a critical issue in dete...
Interactions between atmospheric hydrogen oxides and aircraft nitrogen oxides determine the impact o...
Aircraft-based measurements of sulfur dioxide, acetone, carbon dioxide, and condensation nuclei (CN)...
Emissions from stratospheric aircraft that may directly or indirectly affect ozone include NO(y), H2...
Preliminary calculations suggest that heterogeneous reactions are important in calculating the impac...
Measurements of gaseous nitrogen and sulfur oxide emissions in young aircraft exhaust plumes give i...
We report the mixing ratios of aerosol-associated soluble ions (focusing on SO4= and NO3−) and HNO3 ...
This three-year project supported the construction, calibration, and deployment of a new instrument ...
In-situ HO(x) (OH and HO2) measurements are an essential part of understanding the photochemistry of...
Using observations from balloon-borne instruments and aircraft-borne instruments the investigation a...
Interactions between atmospheric hydrogen oxides and aircraft nitrogen oxides determine the impact o...
ER-2 aircraft observations of OH and HO2 concentrations in the upper troposphere during the NASA/STR...
In situ measurements of hydrogen, nitrogen, and chlorine radicals obtained in the lower stratosphere...
International audienceImpacts of NOx, H2O and aerosol emissions from a projected 2050 aircraft fleet...
International audienceIn this work we focus on the direct radiative forcing (RF) of black carbon (BC...
The generation of sulfuric acid aerosols in aircraft exhaust has emerged as a critical issue in dete...
Interactions between atmospheric hydrogen oxides and aircraft nitrogen oxides determine the impact o...
Aircraft-based measurements of sulfur dioxide, acetone, carbon dioxide, and condensation nuclei (CN)...
Emissions from stratospheric aircraft that may directly or indirectly affect ozone include NO(y), H2...
Preliminary calculations suggest that heterogeneous reactions are important in calculating the impac...
Measurements of gaseous nitrogen and sulfur oxide emissions in young aircraft exhaust plumes give i...
We report the mixing ratios of aerosol-associated soluble ions (focusing on SO4= and NO3−) and HNO3 ...
This three-year project supported the construction, calibration, and deployment of a new instrument ...
In-situ HO(x) (OH and HO2) measurements are an essential part of understanding the photochemistry of...
Using observations from balloon-borne instruments and aircraft-borne instruments the investigation a...
Interactions between atmospheric hydrogen oxides and aircraft nitrogen oxides determine the impact o...
ER-2 aircraft observations of OH and HO2 concentrations in the upper troposphere during the NASA/STR...
In situ measurements of hydrogen, nitrogen, and chlorine radicals obtained in the lower stratosphere...
International audienceImpacts of NOx, H2O and aerosol emissions from a projected 2050 aircraft fleet...
International audienceIn this work we focus on the direct radiative forcing (RF) of black carbon (BC...