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Science 26 June 1970:
Vol. 168. no. 3939, pp. 1582 - 1584
DOI: 10.1126/science.168.3939.1582
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Articles

Atmospheric Oxygen in 1967 to 1970

L. Machta 1 and E. Hughes 2

1 Air Resources Laboratories, Environmental Science Services Administration, Silver Spring, Maryland
2 Analytical Chemistry Division, National Bureau of Standards, Washington, D.C. 20234

Observations of atmospheric oxygen in clean air between 50°N and 60°S, mainly over the oceans, yield an almost constant value of 20.946 percent by volume in dry air. Since 1910 changes with time over the globe appear to be either zero or smaller than the uncertainty in the measurements.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Precise Monitoring of Global Temperature Trends from Satellites.
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The History and Stability of Atmospheric Oxygen.
L. Van Valen (1971)
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Science. ISSN 0036-8075 (print), 1095-9203 (online)