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Sulfuric Acid and Soot Particle Formation in Aircraft ExhaustA combination of CN counts, Ames wire impactor size analyses and optical particle counter data in aircraft exhaust results in a continuous particle size distribution between 0.01 micrometer and 1 micrometer particle radius sampled in the exhaust of a Boeing 757 research aircraft. The two orders of magnitude size range covered by the measurements correspond to 6-7 orders of magnitude particle concentration. CN counts and small particle wire impactor data determine a nucleation mode, composed of aircraft-emitted sulfuric acid aerosol, that contributes between 62% and 85% to the total aerosol surface area and between 31% and 34% to its volume. Soot aerosol comprises 0.5% of the surface area of the sulfuric acid aerosol. Emission indices are: EIH2SO4 = 0.05 g/kgFUEL and (0.2-0.5) g/kgFUEL (for 75 ppmm and 675 ppmm fuel-S, respectively), 2.5E4
Document ID
20020050333
Acquisition Source
Ames Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Pueschel, Rudolf F.
(NASA Ames Research Center Moffett Field, CA United States)
Verma, S.
(NASA Ames Research Center Moffett Field, CA United States)
Ferry, G. V.
(NASA Ames Research Center Moffett Field, CA United States)
Howard, S. D.
(NASA Ames Research Center Moffett Field, CA United States)
Vay, S.
(NASA Ames Research Center Moffett Field, CA United States)
Kinne, S. A.
(NASA Ames Research Center Moffett Field, CA United States)
Baumgardner, D.
(NASA Ames Research Center Moffett Field, CA United States)
Dermott, P.
(NASA Ames Research Center Moffett Field, CA United States)
Kreidenweis, S.
(NASA Ames Research Center Moffett Field, CA United States)
Goodman, J.
(NASA Ames Research Center Moffett Field, CA United States)
Gore, Waren J. Y.
Date Acquired
August 20, 2013
Publication Date
January 1, 1997
Subject Category
Environment Pollution
Funding Number(s)
PROJECT: RTOP 538-08-12-14
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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