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Boundary layer ozone pollution caused by future aircraft emissions
Author(s) -
Hauglustaine Didier A.,
Koffi Brigitte
Publication year - 2012
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2012gl052008
Subject(s) - environmental science , context (archaeology) , ozone , air quality index , atmospheric sciences , stratosphere , air pollution , radiative forcing , pollution , pollutant , troposphere , tropospheric ozone , ozone layer , boundary layer , meteorology , aerosol , geography , geology , ecology , chemistry , physics , archaeology , organic chemistry , biology , thermodynamics
In addition to their impact on the radiative forcing of climate and on the composition of the upper‐troposphere and lower‐stratosphere region, global aircraft NO x emissions are found to contribute significantly to transport emission induced future ozone air pollution in Europe and in the United States. Based on various projections of 2050 emissions of short‐lived pollutants by the three major transport sectors (i.e., road transportation, shipping, and aircraft), we show that aircraft NO x exhaust contribute by 30–40% to the summertime 8h‐average daily maximum surface ozone increase due to transport emissions in Europe and in the United States. Depending on the future scenario, over these two regions, an annual mean contribution of aircraft emissions of 25–48% to the boundary layer ozone burden increase associated with transport emissions in 2050 is simulated. Shipping emissions also represent a significant, and often dominant, contribution to future boundary layer ozone change due to transport emissions over land downwind of maritime corridors in the range 32–60% depending on the emission scenario. In the context of tighter emission standards for road transport in the future, these results indicate that aircraft and shipping emissions deserve consideration as a mean to improve air quality and reduce ozone pollution episodes.