Aviation Fuel Tracer Simulation: Model Intercomparison and Implications
- Danilin, M. Y.
- Penner, J. E.
- Sausen, R.
- Haywood, J. M.
- Prather, M. J.
- Weisenstein, D. K.
- Fleming, E. L.
- Schumann, U.
- Weaver, C. J.
- Jackman, C. H.
- Douglass, A. R.
- Dentener, F. J.
- Koehler, I.
- Isaksen, I. S. A.
- Ko, M. K. W.
- Berntsen, T. K.
- Kinnison, D. E.
- Connell, P. S.
- Pitari, G.
- Fahey, D. W.
DOIAbstract
An upper limit for aircraft-produced perturbations to aerosols and gaseous exhaust products in the upper troposphere and lower stratosphere (UT/LS) is derived using the 1992 aviation fuel tracer simulation performed by eleven global atmospheric models. Key Endings are that subsonic aircraft emissions: (1) have not be responsible for the observed water vapor trends at 40 deg N; (2) could be a significant source of soot mass near 12 km, but not at 20 km; (3) might cause a noticeable increase in the background sulfate aerosol surface area and number densities (but not mass density) near the northern mid-latitude tropopause; and (4) could provide a global, annual mean top of the atmosphere radiative forcing up to +0.006 W/sq m and -0.013 W/sq m...
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