Abstract
An interactive climate-chemistry model is used to investigate the sensitivity of tropospheric ozone concentrations to various changes in ozone precursor (CH4, CO, NOx) emissions and to calculate the associated radiative forcing on the climate system. Significant perturbations of tropospheric ozone photochemical produetion and consequently of ozone concentrations are calculated, with important seasonal and latitudinal dependences. For all simulations, the radiative forcing analysis confirms the important role played by tropospheric ozone which contributes to 15–20% to the globally averaged total forcing. The radiative forcing also shows strong geographical and seasonal variations, peaking in northern hemisphere mid-latitudes during summer. The high efficiency in producing ozone from nitrogen oxide emissions by lightning and subsonic aircraft, suggested by earlier studies, is confirmed. Furthermore, the higher efficiency of ozone changes from CH4 and CO tropical emission increases to partieipate to the radiative forcing is suggested.
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Hauglustaine, D.A., Granier, C. (1995). Radiative Forcing by Tropospheric Ozone Changes due to Increased Emissions of CH4, CO and NOx . In: Wang, WC., Isaksen, I.S.A. (eds) Atmospheric Ozone as a Climate Gas. NATO ASI Series, vol 32. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-79869-6_13
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DOI: https://doi.org/10.1007/978-3-642-79869-6_13
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