The impact of aerosols on solar ultraviolet radiation an photochemical smog
- Univ. of Maryland, College Park, MD (United States); and others
Photochemical smog, or ground-level ozone, has been the most recalcitrant of air pollution problems, but reductions in emissions of sulfur and hydrocarbons may yield unanticipated benefits in air quality. While sulfate and some organic aerosol particles scatter solar radiation back into space and can cool Earth`s surface, they also change the actinic flux of ultraviolet (UV) radiation. Observations and numerical models show that UV-scattering particles in the boundary layer accelerate photochemical reactions and smog production, but UV-absorbing aerosols such as mineral dust and soot inhibit smog production. Results could have major implications for the control of air pollution. 19 refs., 4 figs.
- OSTI ID:
- 569378
- Journal Information:
- Science, Vol. 278, Issue 5339; Other Information: PBD: 31 Oct 1997
- Country of Publication:
- United States
- Language:
- English
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