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Science 21 January 1972:
Vol. 175. no. 4019, p. 323
DOI: 10.1126/science.175.4019.323
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Articles

Martian Dust Storm: Its Depth on 25 November 1971

T. D. Parkinson 1 and D. M. Hunten 1

1 Kitt Peak National Observatory, Tucson, Arizona 85717

Carbon dioxide absorption on Mars was observed by Earth-based spectroscopy at 10,500 angstroms. Its abundance was equivalent to a partial pressure of 2.0 millibars instead of the normal 5.5 millibars. The dust layer was therefore opaque to a height of about 11 kilometers. On 10 December, a pressure of 5.8 millibars was found.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Detection of Molecular Oxygen on Mars.
N. P. Carleton, N. P. Carleton, and W. A. Traub (1972)
Science 177, 988-992
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Science. ISSN 0036-8075 (print), 1095-9203 (online)