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The Role of HO(x) in Super- and Subsonic Aircraft Exhaust PlumesThe 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 HO, 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.
Document ID
19990046022
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hanisco, T. F.
(Harvard Univ. Cambridge, MA United States)
Wennberg, P. O.
(Harvard Univ. Cambridge, MA United States)
Cohen, R. C.
(Harvard Univ. Cambridge, MA United States)
Anderson, J. G.
(Harvard Univ. Cambridge, MA United States)
Fahey, D. W.
(National Oceanic and Atmospheric Administration Boulder, CO United States)
Keim, E. R.
(National Oceanic and Atmospheric Administration Boulder, CO United States)
Gao, R. S.
(National Oceanic and Atmospheric Administration Boulder, CO United States)
Wamsley, R. C.
(National Oceanic and Atmospheric Administration Boulder, CO United States)
Donnelly, S. G.
(National Oceanic and Atmospheric Administration Boulder, CO United States)
DelNegro, L. A.
(National Oceanic and Atmospheric Administration Boulder, CO United States)
Salawitch, R. J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Kelly, K. K.
(National Oceanic and Atmospheric Administration Boulder, CO United States)
Proffitt, M. H.
(National Oceanic and Atmospheric Administration Boulder, CO United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1997
Publication Information
Publication: Geophysical Research Letters
Publisher: American Geophysical Union
Volume: 24
Issue: 1
ISSN: 0094-8534
Subject Category
Environment Pollution
Report/Patent Number
Paper-96GL03724
Distribution Limits
Public
Copyright
Other

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