The effect of increased carbon dioxide concentrations on stratospheric ozone

Details The effect of increased carbon dioxide concentrations on stratospheric ozone The effect of increased carbon dioxide concentrations on stratospheric ozone

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.1326b&link_type=abstract

Journal of Geophysical Research, vol. 83, Mar. 20, 1978, p. 1326-1332.

Physics

7

Atmospheric Chemistry, Atmospheric Composition, Carbon Dioxide Concentration, Ozone, Stratosphere, Air Pollution, Atmospheric Models, Atmospheric Temperature, Diffusion Coefficient, Vertical Distribution

Scientific paper

Consideration is given to the influence on ozone of an increased carbon dioxide concentration, for which a measurable growth has been observed in the recent past. Increased carbon dioxide can indirectly affect ozone by perturbing atmospheric temperatures, which will alter ozone production, whose rate displays a fairly strong temperature dependence. This paper presents one-dimensional model results for the steady state ozone behavior when the CO2 concentration is twice its ambient level; the results account for coupling between chemistry and temperature. When the CO2 level doubled, the total ozone burden increased in relation to the ambient burden by 1.2-2.5%, depending on the vertical diffusion coefficient used. Above 30 km, ozone concentrations were larger than the ambient values, a maximum increase of 16% being reached at 43 km. In this region the relative variations were insensitive to the choice of diffusion coefficient. Below 30 km, ozone concentrations were smaller than the unperturbed values and were sensitive to the vertical diffusion profile in this region (10-30 km).

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