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Science 26 February 1999:
Vol. 283. no. 5406, pp. 1273 - 1275
DOI: 10.1126/science.283.5406.1273
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Perspectives

Also see the archival list of Science's Compass: Enhanced Perspectives

CLIMATE CHANGE:
Enhanced: Solving the Aerosol Puzzle

Jeffrey T. Kiehl

Natural and human factors contribute to the presence of aerosols in Earth's atmosphere. These aerosols reflect some sunlight back into space, thus effectively cooling the atmosphere. This effect may cancel out some of the global warming caused by greenhouse gases, but the magnitude of direct and indirect aerosol effects on the radiation budget of Earth remains quite uncertain. Concerted efforts with different observational platforms in conjunction with sophisticated climate modeling are required to solve this problem.

J. T. Kiehl is at the National Center for Atmospheric Research, Climate Modeling Section, Boulder, CO 80307, USA. E-mail: jtkon{at}ncar.ucar.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Toward elimination of discrepancies between theory and experiment: The rate constant of the atmospheric conversion of SO3 to H2SO4.
T. Loerting and K. R. Liedl (2000)
PNAS 97, 8874-8878
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