Tropospheric ozone and the greenhouse effect
article
Global changes in emissions of the non-greenhouse gases nitrogen oxides (N0x), Volatile Organic Compounds (VOCs) and carbon monoxide (CO), affect the concentrations of greenhouse gases, in particular of ozone. The chemical mechanisms causing these changes were investigated with a global two-dimensional model, and the greenhouse effect of tropospheric ozone changes in the next century was calculated. For the 1990 situation, a radiative forcing of 0.33 Wm-2 (globally averaged) was calculated with, respect to the pre-industrial troposphere. A value of 0.43 Wrn-2 was found for the Northem Hemisphere. The current contribution of tropospheric ozone to the radiative forcing in the Northem Hemisphere ranks second with methane (CH4), after carbon dioxide (CO2). When emissions develop according to the IPCCs "Business as Usual" scenario, the radiative forcing of tropospheric ozone is expected to increase significantly, but since the radiative forcings of other greenhouse gases increase just as well, its relative contribution in comparison to other greenhouse gases will remain similar.
TNO Identifier
289415
Source
Greenhouse gases, pp. 301-309.
Publisher
Kluwer
Collation
9 p.
Place of publication
Deventer, The Netherlands
Pages
301-309
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