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London type smog
A combination of several gases and particulate matter that forms during a cover of fog or in the event of a low lying temperature inversion. The gases present include sulphur dioxide as a result of the burning of coal for use as energy, and the particulate matter included calcium sulphide as a result of acid deposition. In 1952, over a four day period, a temperature inversion trapped smoke and sulphur dioxide at dangerous levels, >4 mg/m3 and >1. 3 ppmv respectively, both ten times the normal levels.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Chemistry; Weather
- Category: Atmospheric chemistry
- Educational Institution: Sam Houston State University
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