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Science 27 September 1991:
Vol. 253. no. 5027, pp. 1541 - 1548
DOI: 10.1126/science.253.5027.1541
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Articles

Galileo Infrared Imaging Spectroscopy Measurements at Venus

R. W. CARLSON 1, K. H. BAINES 1, TH. ENCRENAZ 2, F. W. TAYLOR 3, P. DROSSART 2, L. W. KAMP 1, J. B. POLLACK 4, E. LELLOUCH 2, A. D. COLLARD 3, S. B. CALCUTT 3, D. GRINSPOON 4, P. R. WEISSMAN 1, W. D. SMYTHE 1, A. C. OCAMPO 1, G. E. DANIELSON 5, F. P. FANALE 6, T. V. JOHNSON 1, H. H. KIEFFER 7, D. L. MATSON 1, T. B. MCCORD 6, and L. A. SODERBLOM 7

1 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109
2 Observatoire de Paris, F-92195 Meudon, France
3 Oxford University, Oxford OX1 3PU, United Kingdom
4 National Aeronautics and Space Administration (NASA) Ames Research Center Moffett Field, CA 94035
5 Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91109
6 University of Hawaii, Honolulu, HI 96822
7 U.S. Geological Survey, Flagstaff, AZ 86001

During the 1990 Galileo Venus flyby, the Near Infaied Mapping Spectrometer investigated the night-side atmosphere of Venus in the spectral range 0.7 to 5.2 micrometers. Multispectral images at high spatial resolution indicate substanmial cloud opacity variations in the lower cloud levels, centered at 50 kilometers altitude. Zonal and meridional winds were derived for this level and are consistent with motion of the upper branch of a Hadley cell. Northern and southern hemisphere clouds appear to be markedly different. Spectral profiles were used to derive lower atmosphere abundances of water vapor and other species.

Revised on May 23, 1991
Accepted on August 19, 1991


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Wind Streaks on Venus: Clues to Atmospheric Circulation.
R. Greeley, R. Greeley, G. Schubert, D. Limonadi, K. C. Bender, W. I. Newman, P. E. Thomas, C. M. Weitz, and S. D. Wall (1994)
Science 263, 358-361
   Abstract »    PDF »
Middle Infrared Thermal Maps of Venus at the Time of the Galileo Encounter.
G. S. Orton, G. S. ORTON, J. CALDWELL, A. J. FRIEDSON, and T. Z. MARTIN (1991)
Science 253, 1536-1538
   Abstract »    PDF »
Ground-Based Near-Infrared Imaging Observations of Venus During the Galileo Encounter.
D. Crisp, D. CRISP, S. MCMULDROCH, S. K. STEPHENS, W. M. SINTON, B. RAGENT, K. -W. HODAPP, R. G. PROBST, L. R. DOYLE, D. A. ALLEN, et al. (1991)
Science 253, 1538-1541
   Abstract »    PDF »


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