Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 26 October 1973:
Vol. 182. no. 4110, pp. 381 - 383
DOI: 10.1126/science.182.4110.381
Prev | Table of Contents | Next

Articles

Mars: Mariner 9 Spectroscopic Evidence for H2O Ice Clouds

Robert J. Curran 1, Barney J. Conrath 1, Rudolf A. Hanel 1, Virgil G. Kunde 1, and John C. Pearl 1

1 Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, Maryland

Spectral features observed with the Mariner 9 interferometer spectrometer are identified as those of H2O ice. The measured spectra are compared with theoretical calculations for the transfer of radiation through clouds of ice particles with variations in size distribution and integrated cloud mass. Comparisons with an observed spectrum from the Tharsis Ridge region indicate H2O ice clouds composed of particles with a mean radius of 2.0 micrometers and an integrated cloud mass of 5 x 10-5 grain per square centimeter.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Results from the Mars Global Surveyor Thermal Emission Spectrometer.
P. R. Christensen, D. L. Anderson, S. C. Chase, R. T. Clancy, R. N. Clark, B. J. Conrath, H. H. Kieffer, R. O. Kuzmin, M. C. Malin, J. C. Pearl, et al. (1998)
Science 279, 1692-1698
   Abstract »    Full Text »
Infrared Thermal Mapping of the Martian Surface and Atmosphere: First Results.
H. H. Kieffer, H. H. KIEFFER, S. C. CHASE JR., E. D. MINER, F. D. PALLUCONI, G. MUNCH, G. NEUGEBAUER, and T. Z. MARTIN (1976)
Science 193, 780-786
   Abstract »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)