Two major dust storms, one Mars year apart - Comparison from Viking data

Details Two major dust storms, one Mars year apart - Comparison from Viking data Two major dust storms, one Mars year apart - Comparison from Viking data

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.3247r&link_type=abstract

Journal of Geophysical Research, vol. 86, Apr. 20, 1981, p. 3247-3254.

Mathematics

Logic

20

Dust Storms, Mars Atmosphere, Meteorological Parameters, Planetary Meteorology, Planetology, Viking Lander Spacecraft, Atmospheric Pressure, Atmospheric Temperature, Baroclinic Waves, Diurnal Variations, Pressure Oscillations, Wind Variations, Wind Velocity, Mars, Viking, Dust Storms, Meteorology, Atmosphere, Pressure, Winds, Baroclinity, Data, Amplitude, Diurnal Variations, Tides, Viking 1 Lander, Viking 2 Lander, Observations, Velocity, Waves

Scientific paper

The Viking Mars Landers have been on the Mars surface for over two Mars years. During the first year two major, probably global, dust storms occurred. The first was unusually early compared to most previous earth-based observations. A major storm occurred during the second year, almost precisely one year after the first storm of the first year. Meteorological data show roughly similar atmospheric behavior for the two early storms. Of particular note is the increase in amplitude of pressure oscillations (probably of baroclinic origin) and concurrent increases in wind speed during the build-up phase of all three storms. The generation of these waves appears to be a natural consequence of seasonal effects not associated with the dust storms. It is suggested that baroclinic waves, should they exist in the Southern Hemisphere during the time of dust storm generation, could be an important factor in the growth and development of the dust storms.

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