Physics
Scientific paper
Mar 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976jats...33..544a&link_type=abstract
Journal of the Atmospheric Sciences, vol. 33, Mar. 1976, p. 544-552.
Physics
1
Dust Storms, Mariner 9 Space Probe, Mars Atmosphere, Rayleigh Scattering, Ultraviolet Spectroscopy, Atmospheric Scattering, Atmospheric Stratification, Lower Atmosphere, Optical Density, Signal Reflection, Water Vapor
Scientific paper
Analysis of the bright-limb profiles obtained by the Mariner 9 ultraviolet spectrometer during the December 1971 dust storm on Mars shows that the dust extended to an altitude of plus or minus 10 km, with a sharp cutoff in altitude distribution. Above the dust layer, the reflected signal is characterized by Rayleigh scattering in the wavelength interval 2100 to 3500 A. Detached haze layers were detected at an altitude of 70 plus or minus 10 km at the top of the dust layer. The haze layers have a nominal optical thickness of about 0.0001 and a geometrical thickness of 3 to 10 km and are probably a condensate of small CO2 or H2O ice particles (mean radius less than 0.1 micron). Similar features were revealed in Mariner 9 TV pictures of the limb.
Ajello Joseph M.
Hord Charles W.
Lane Arthur L.
Pang Kevin D.
Simmons Karen E.
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