Other
Scientific paper
Nov 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.2579z&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 23, p. 2579-2582
Other
18
Air Pollution, Air Sampling, Emission Spectra, Exhaust Emission, Mixing Ratios, Ozone Depletion, Plumes, Pollution Monitoring, Subsonic Aircraft, Vertical Distribution, Atmospheric Chemistry, Carbon Dioxide, Carbon Monoxide, Chemical Reactions, Methane, Nitrogen Oxides
Scientific paper
An analysis of data obtained during the second Airborne Arctic Stratospheric Expedition (AASE-II) was made with emphasis on aircraft exhaust plumes accidentally encountered during the mission. Twenty spikes were found with peak NO(y) increments greater than or equal to 1 ppbv. The examination of CO and CO2 indicated that there was only one NO(y) spike having clearly corresponding spikes of both CO and CO2 and another four with unambigious CO2 spikes. No significant increases were found for CH4 and N2O for these 5 spikes. The ratio of the excess CO2 and NO(y) compares well with the ratio of published subsonic aircraft emission indices. The study of the selected spikes from the DC-8 and another two spikes observed during other missions shows that the odd nitrogen other than NO(x) accounts for a very small percentage of the NO(y) increase associated with the observed spikes.
Anderson Brian E.
Collins E. Jr. J.
Liu Char-Shine
Ridley Brian A.
Sachse Glen W.
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