Air pollution
Sir, — Concerning the relative importance of smoke from the domestic open fire I also wonder about the exact significance of the 24hour totals printed in “The Press.” From the Port Hills the worst days for visible
pollution seem typically to be those when conditions are basically calm with a .light easterly coming off. the sea. A high relative humidity indeed may be a prerequisite for this effect or “smog.” If as I suggest a related phenomenon may operate in the evening, is it not likely that as. the air cools and the dew point is reached all the accumulated pollutants of the day would be precipitated? The point I wish to make is that a peak in the recordings of smoke registered in the evening may be a coincidence only tenuously related to the lighting of fires in people’s homes. — Yours, etc., J. L. HOARE. August 11, 1980.
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Press, 12 August 1980, Page 16
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150Air pollution Press, 12 August 1980, Page 16
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