Record Details
DC-8-based observations of aircraft CO, CH₄, N₂O, H₂O(G) emission indices during SUCCESS
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | DC-8-based observations of aircraft CO, CH₄, N₂O, H₂O(G) emission indices during SUCCESS |
| Names |
Vay, S. A.
(creator) Anderson, B. E. (creator) Sachse, G. W. (creator) Collins, J. E. (creator) Podolske, J. R. (creator) Twohy, Cynthia (creator) Gandrud, Bruce W. (creator) Chan, K. Rolan (creator) Baughcum, S. L. (creator) Wallio, H. A. (creator) |
| Date Issued | 1998-05-15 (iso8601) |
| Note | Copyright 1998 by the American Geophysical Union |
| Abstract | We report the first measurements of CO₂, CH₄, N₂O, CO₂, and H₂O(g) in the exhaust trails of T-39, B-757, and DC-8 aircraft at cruise conditions. Emission indices (El) derived from these in-situ measurements are presented. Results are in agreement with ground-based tests indicating aircraft act as a net sink for CH₄ and recent airborne in-situ measurements that N₂O is not an important exhaust constituent. Condensation of H₂O(g) on exhaust particles resulted in EI(H₂O(g)) values less than those expected from the combustion of fuel alone. Observed apparent negative EI(H₂O(g)) values suggest that aircraft aerosol emissions, under unique atmospheric conditions, seed cloud formation and lead to dehydration of the exhaust-influenced air parcel. Such conditions may induce the formation of cirrus clouds from persistent contrails. Comparisons with the Boeing EMIT Code show measurement-derived CO emission index values consistent with model evaluations. |
| Genre | Article |
| Identifier | Vay, S. A., Anderson, B. E., Sachse, G. W., Collins, J. E.,J Podolske, J. R., Twohy, C. H. , Gandrud, B., Chan, K. R., Baughcum, S. L. and Wallio, H. A., 1998, DC-8-based observations of aircraft CO, emission indices during SUCCESS: Geophys. Res. Lett., v. 25, p. 1,717-1,720. |
