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Science 13 April 2001:
Vol. 292. no. 5515, pp. 192 - 194
DOI: 10.1126/science.292.5515.192
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News Focus

GLOBAL WARMING:
Rising Global Temperature, Rising Uncertainty

Richard A. Kerr

In recent years, climate modelers have become increasingly certain of the reality of global warming, but at the same time they are paradoxically becoming less certain in their predictions of the amount of future warming. Yet as climatologists' appreciation of climate prediction's large and perhaps unresolvable uncertainties grows, they remain steadfast in advising policy-makers that the threat justifies action. As policy-makers deal with uncertainties in greenhouse models, they may find some lessons in the lingering effects of acid rain long after controls were imposed (see p. 195).

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Influence of anthropogenic aerosol on cloud optical depth and albedo shown by satellite measurements and chemical transport modeling.
S. E. Schwartz, Harshvardhan, and C. M. Benkovitz (2002)
PNAS 99, 1784-1789
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Science. ISSN 0036-8075 (print), 1095-9203 (online)