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Carbon monoxide in the earth's atmosphere - Increasing trendThe results of an analysis of more than 60,000 atmospheric measurements of carbon monoxide taken over 3-1/2 years at Cape Meares, Oregon (45 deg N, 125 deg W), indicate that the background concentration of this gas is increasing. The rate of increase, although uncertain, is about 6 percent per year on average. Human activities are the likely cause of a substantial portion of this observed increase; however, because of the short atmospheric lifetime of carbon monoxide and the relatively few years of observations, fluctuations of sources and sinks related to the natural variability of climate may have affected the observed trend. Increased carbon monoxide may deplete tropospheric hydroxyl radicals, slowing down the removal of dozens of man-made and anthropogenic trace gases and thus indirectly affecting the earth's climate and possibly the stratospheric ozone layer.
Document ID
19840044856
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Khalil, M. A. K.
(Oregon Graduate Center for Study and Research Beaverton, OR, United States)
Rasmussen, R. A.
(Oregon Graduate Center Beaverton, OR, United States)
Date Acquired
August 12, 2013
Publication Date
April 6, 1984
Publication Information
Publication: Science
Volume: 224
ISSN: 0036-8075
Subject Category
Environment Pollution
Accession Number
84A27643
Funding Number(s)
CONTRACT_GRANT: NSF ATM-81-09047
CONTRACT_GRANT: NAG1-160
Distribution Limits
Public
Copyright
Other

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