caa a22 4500 477061230 CHVBK 20180405111401.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00058706 doi (NATIONALLICENCE)springer-10.1007/BF00058706 Subsonic aircraft and ozone trends [Elektronische Daten] [A. Jones, K. Law, J. Pyle] Growth in subsonic air traffic over the past 20 years has been dramatic, with an annual increase of }6.1% over the decade between 1978 and 1988. Furthermore, aircraft activities in the year 2000 are predicted to be double those of 1990, with a shift towards more high-flying, longhaul subsonics. Aircraft exhaust gases increase the amount of nitrogen oxides (NO x ) in the upper troposphere/lower stratosphere through injection at cruise altitudes. Given that NO x is instrumental in tropospheric ozone production and stratospheric ozone destruction, it is important to determine the influence of subsonic aircraft NO x emissions on levels of atmospheric ozone. This paper describes calculations designed to investigate the impact that subsonic aircraft may already have had on the atmosphere during the 1980s, run in a 2-D chemical-radiative-transport model. The results indicate a significant increase in upper tropospheric ozone over the decade arising from aircraft emissions. However, when comparing model results with observational data, certain discrepancies appear. Lower stratospheric ozone loss over the 1980s does not appear to be greatly altered by the inclusion of aircraft emissions in the model. However, given the trend in greater numbers of long-haul subsonic aircraft, this factor must be considered in any further calculations. Kluwer Academic Publishers, 1996 subsonic aircraft nationallicence ozone trends nationallicence NO x emissions nationallicence aircraft exhaust gasses nationallicence Jones A. Cambridge Centre for Atmospheric Science, Department of Chemistry, Cambridge University, CB2 1EW, Cambridge, U.K. aut Law K. Cambridge Centre for Atmospheric Science, Department of Chemistry, Cambridge University, CB2 1EW, Cambridge, U.K. aut Pyle J. Cambridge Centre for Atmospheric Science, Department of Chemistry, Cambridge University, CB2 1EW, Cambridge, U.K. aut Journal of Atmospheric Chemistry Kluwer Academic Publishers; gopher://gopher.wkap.nl 23/1(1996-01-01), 89-105 0167-7764 23:1<89 1996 23 10874 https://doi.org/10.1007/BF00058706 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00058706 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jones A. Cambridge Centre for Atmospheric Science, Department of Chemistry, Cambridge University, CB2 1EW, Cambridge, U.K aut NATIONALLICENCE 700 1- Law K. Cambridge Centre for Atmospheric Science, Department of Chemistry, Cambridge University, CB2 1EW, Cambridge, U.K aut NATIONALLICENCE 700 1- Pyle J. Cambridge Centre for Atmospheric Science, Department of Chemistry, Cambridge University, CB2 1EW, Cambridge, U.K aut NATIONALLICENCE 773 0- Journal of Atmospheric Chemistry Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 23/1(1996-01-01), 89-105 0167-7764 23:1<89 1996 23 10874 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer