The impact of aerosols on solar ultraviolet radiation and photochemical smog

R. R. Dickerson*, S. Kondragunta, G. Stenchikov, K. L. Civerolo, B. G. Doddridge, B. N. Holben

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

514 Scopus citations


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 aria 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.

Original languageEnglish (US)
Pages (from-to)827-830
Number of pages4
Issue number5339
StatePublished - Oct 31 1997
Externally publishedYes

ASJC Scopus subject areas

  • General


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