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Long-term temperature records at Phoenix, Arizona, indicate the existence of a post-1946 warming trend that may be attributed to the buildup of pollution in the lower layers of the atmosphere. The causative mechanism appears to be an enhancement of the so-called "greenhouse effect," induced by the inter-action of aerosol with long-wavelength thermal radiation in the lower atmosphere.
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Sherwood B. Idso (1974) studied this question.
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