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Mariner Mars 1969: Atmospheric results

Leovy­, Conway B. and Smith, Bradford A. and Young, Andrew T. and Leighton, Robert B. (1971) Mariner Mars 1969: Atmospheric results. Journal of Geophysical Research, 76 (2). pp. 297-312. ISSN 0148-0227. doi:10.1029/JB076i002p00297.

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Results of investigation of probable atmospheric effects appearing in Mariner '69 TV pictures that have undergone noise removal and preliminary decalibration are described. Two distinct types of haze are distinguished: north polar haze, seen prominently against the face of the planet in blue photographs, and thin haze, usually identified by its appearance on the limb and not strongly colored. Thin haze is surprisingly widespread, particularly in the southern hemisphere. Discrete bright features, which may be evidence for condensation on the ground or in the atmosphere, are described. These occur where bright features have often been seen from earth, in a region where very large multiple-ringed structures seem to dominate the surface morphology. The speculation that these may be evidence for local water-vapor exchange between ground and atmosphere is raised, and some constraints on local subsurface water-vapor sources in the Mars tropics are described. Finally, some implications of the Mariner '69 results for atmospheric exploration by Mariner '71 are briefly discussed.

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Additional Information:Copyright 1971 by the American Geophysical Union. (Received August 10, 1970; revised September 17, 1970.) We are grateful to the many NASA and JPL personnel who made successful accomplishment of the Mariner 6 and 7 missions possible. Valuable assistance in the preparation of this paper was provided by S. A. Collins, G. E. Danielson, T. Rindfleisch, J. Dunne, and W. Stromberg of the Jet Propulsion Laboratory, J. E. Cutts of the California Institute of Technology, and R. Zurek of the University of Washington. Discussions with our colleagues B. C. Murray, M. E. Davies, R. P. Sharp, and A. Heriman have been most helpful. The participation of C. B. Leovy was supported in part under NASA grant 48-002-073. Contribution 225, Department of Atmospheric Sciences, University of Washington.
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Subject Keywords:Mars: Atmosphere
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University of Washington, Department of Atmospheric Sciences225
Issue or Number:2
Record Number:CaltechAUTHORS:20141107-095401333
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Official Citation:Leovy, C. B., B. A. Smith, A. T. Young, and R. B. Leighton (1971), Mariner Mars 1969: Atmospheric results, J. Geophys. Res., 76(2), 297–312, doi:10.1029/JB076i002p00297
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51423
Deposited By: George Porter
Deposited On:07 Nov 2014 18:20
Last Modified:10 Nov 2021 19:10

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