Mars atmospheric opacity effects observed in the Northern Hemisphere by Viking orbiter imaging

Details Mars atmospheric opacity effects observed in the Northern Hemisphere by Viking orbiter imaging Mars atmospheric opacity effects observed in the Northern Hemisphere by Viking orbiter imaging

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....8611419t&link_type=abstract

Journal of Geophysical Research, vol. 86, Dec. 1, 1981, p. 11419-11429. NASA-supported research.

Physics

Optics

25

Atmospheric Optics, Mars Atmosphere, Northern Hemisphere, Opacity, Viking Orbiter Spacecraft, Aerosols, Astronomical Photometry, Atmospheric Scattering, Landing Sites, Optical Density, Reflectance, Television Cameras, Viking Lander Spacecraft, Mars, Atmosphere, Opacity, Observations, Imagery, Viking Orbiter, Data, Photometry, Dust Storms, Particles, Scattering, Photographs, Satellites, Viking 1 Lander, Landing Sites, Reflectance, Features, Viking 2 Lander, Deimos, Optical Properties, Depth, Maps, History, A

Scientific paper

Viking orbiter television camera observations of Mars contrasts show variations of atmospheric opacity in the Southern Hemisphere. The study is extended into the Northern Hemisphere, over a longer time period, and results in a detailed description of photometric changes at the lander sites, as seen from orbit. During the period of January 1977 to April 1978, a series of four storms at 202 deg, 264 deg, 40 deg and 86 deg latitudes have provided photometric changes and planetwide aerosol distributions for 18 months. It is found that the large, forward-scattering particles did not enter the atmosphere at the storm's onsets. A reduction of atmospheric transmission by over 20% at visual wavelengths remained for nearly one Martian year.

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