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Article: Reasons for scepticism about greenhouse warming. (evidence for increase in global temperature lacking)
- Article from:
- Canadian Chemical News
- Article date:
- October 1, 1993
- Author:
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Copyright informationCOPYRIGHT 1993 Chemical Institute of Canada. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Predictions of global warming due to the greenhouse effect are being used to justify expensive socioeconomic action by Canada and other nations, but direct evidence in support of the hypothesis is hard to find
Is there a causal connection between an increase in global temperature (properly, global-average annual-mean surface-air temperature), increasing levels of atmospheric C|O.sub.2~ (partial pressure of C|O.sub.2~ in the atmosphere), and increased C|O.sub.2~ emissions (primarily from combustion of fossil fuels and manufacture of cement)?
All these show a positive trend over time since ca. 1860 which is taken to be evidence in favor of the "global warming from increases ...