Changes in Canadian national visibility

MAN-MADE pollution can have important effects on public health and the climate 1–3 . The latter, particularly, is a long term effect, and necessitates long term study over wide areas. Here we report the measurement of one relevant parameter, visibility, at Canadian airports. There are more than 70 u...

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Bibliographic Details
Published in:Nature (London) 1976-03, Vol.260 (5547), p.129-130
Main Author: INHABER, H
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
letter
multidisciplinary
Science
Science (multidisciplinary)
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Summary:MAN-MADE pollution can have important effects on public health and the climate 1–3 . The latter, particularly, is a long term effect, and necessitates long term study over wide areas. Here we report the measurement of one relevant parameter, visibility, at Canadian airports. There are more than 70 usable sets of data. We have found that from 1953 to 1963 there was a general increase in visibility, but, since that date the visibility has remained roughly constant. We attribute both effects to pollution.
ISSN:0028-0836
1476-4687
DOI:10.1038/260129a0