학술논문
Aviation fuel tracer simulation: Model intercomparison and implications
Document Type
article
Author
Danilin, M. Y; Fahey, D. W; Schumann, U.; Prather, M. J; Penner, J. E; Ko, M. K. W; Weisenstein, D. K; Jackman, C. H; Pitari, G.; Kahler, I.; Sausen, R.; Weaver, C. J; Douglass, A. R; Connell, P. S; Kinnison, D. E; Dentener, F. J; Fleming, E. L; Berntsen, T. K; Isaksen, I. S. A; Haywood, J. M; Karcher, B.
Source
Geophysical Research Letters. 25(21)
Subject
Language
Abstract
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 findings are that subsonic aircraft emissions: 1) have not be responsible for the observed water vapor trends at 40°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/m² and −0.013 W/m² due to emitted soot and sulfur, respectively.