Sulfuric acid measurements in the exhaust plume of a jet aircraft in flight: 
Implications for the sulfuric acid formation efficiency

Curtius, J.; Arnold, F.; Schulte, P.

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Sulfuric acid measurements in the exhaust plume of a jet aircraft in flight: Implications for the sulfuric acid formation efficiency

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Curtius, J.
Frank Arnold - Atmospheric Trace Gases and Ions, Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Arnold, F.
Frank Arnold - Atmospheric Trace Gases and Ions, Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Curtius, J., Arnold, F., & Schulte, P. (2002). Sulfuric acid measurements in the exhaust plume of a jet aircraft in flight: Implications for the sulfuric acid formation efficiency. Geophysical Research Letters, 29(7): 1113, pp. 1113-1113.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-8374-4

Abstract

[1] Sulfuric acid concentrations were measured in the exhaust plume of a B737-300 aircraft in flight. The measurements were made onboard of the German research aircraft Falcon using the Volatile Aerosol Component Analyzer (VACA). The VACA measures total H2SO4, which is the sum of gaseous H2SO4 and aerosol H2SO4. Measurements took place at distances of 25-200 m behind the B737 corresponding to plume ages of about 0.1-1 seconds. The fuel sulfur content (FSC) of the fuel burned by the B737 engines was alternatively 2.6 and 56 mg sulfur per kilogram fuel (ppmm). H2SO4 concentrations measured in the plume for the 56 ppmm sulfur case were up to similar to600 pptv. The average concentration of H2SO4 measured in the ambient atmosphere outside the aircraft plume was 88 pptv, the maximum ambient atmospheric H2SO4 was similar to300 pptv. Average efficiencies epsilon(DeltaCO2) = 3.3 +/- 1.8% and epsilon(DeltaT) = 2.9 +/- 1.6% for fuel sulfur conversion to sulfuric acid were inferred when relating the H2SO4 data to measurements of the plume tracers DeltaCO(2) and DeltaT.