The Impact of Aerosols on Solar Ultraviolet Radiation and Photochemical Smog-Reference-Cited by-同舟云学术

The Impact of Aerosols on Solar Ultraviolet Radiation and Photochemical Smog

Published:1997-10-31 Issue:5339 Volume:278 Page:827-830
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Dickerson R. R.¹²,Kondragunta S.¹²,Stenchikov G.¹²,Civerolo K. L.¹²,Doddridge B. G.¹²,Holben B. N.¹²

Affiliation:

1. R. R. Dickerson, S. Kondragunta, G. Stenchikov, K. L. Civerolo, B. G. Doddridge, Department of Meteorology, University of Maryland, College Park, MD 20742, USA.

2. B. N. Holben, NASA Goddard Space Flight Center, Greenbelt, MD 20742, USA.

Abstract

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference55 articles.

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5. . The effect of aerosols on UV flux and photochemical ozone production near Earth's surface has generally been assumed to be small and negative that is the presence of aerosols reduces slightly the rate of smog formation [L. Zafonte P. Rieger J. Holmes Environ. Sci. Technol. 11 483 (1977);

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