Man-Made Climatic Changes

Nature produces notable climatic fluctuations. These can be demonstrated in long-term instrumental records. Volcanic eruptions seem to exercise a marked influence. Suspicions that heat-absorbing carbon dioxide of anthropogenic origin have had an influence on global climate have not yet been substant...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1970-12, Vol.170 (3964), p.1265-1274
Main Author: Landsberg, Helmut E.
Format: Article
Language:English
Subjects:
Atmospherics
Change/Changes
Cities
Climate change
Climate models
Climate/Climates
Cloud seeding
Global climate models
Man/Men (see also Male)
Pollution
Precipitation
Rain
Surface temperature
Weather
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Summary:Nature produces notable climatic fluctuations. These can be demonstrated in long-term instrumental records. Volcanic eruptions seem to exercise a marked influence. Suspicions that heat-absorbing carbon dioxide of anthropogenic origin have had an influence on global climate have not yet been substantiated. Man-introduced particulates, although more likely to affect climate, have only contributed slightly, if at all, to recent climatic trends. However, substantial changes have been brought about locally &, perhaps, regionally by Ur'ization. These include rising temperatures, reduced wind speeds, increased cloudiness, added rainfall, more fog & lowered visibilities. Some of these effects are caused by air pollutants which can affect cloud formation & rainfall. They might even redistribute or reduce rainfall downwind. Because of such end results prompt elimination of the pollutants involved is desirable as is the close surveillance of other man-made additions to the atmosphere that can conceivably affect global climate. AA.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.170.3964.1265