Computer Science
Scientific paper
Feb 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984icar...57..231s&link_type=abstract
Icarus (ISSN 0019-1035), vol. 57, Feb. 1984, p. 231-240. Research supported by the University of Colorado.
Computer Science
28
Annual Variations, Atmospheric Circulation, Atmospheric Composition, Cosmic Gases, Planetary Atmospheres, Pluto (Planet), Argon, Atmospheric Temperature, Carbon Monoxide, Methane, Nitrogen, Oxygen, Planetology, Solar Planetary Interactions, Spatial Distribution, Pluto, Composition, Seasonal Variations, Dynamics, Atmosphere, Gases, Abundance, Vapor Pressure, Neon, Nitrogen, Carbon Monoxide, Argon, Oxygen, Saturation, Carbon Dioxide, Methane, Mixing Ratio, Eclipses, Thermal Effects, Diurnal Variations, Insola
Scientific paper
The potential seasonal variation of Pluto's atmosphere is investigated by considering the behavior of the candidate atmospheric constituents Ne, N2, CO, O2, and Ar when individually mixed with CH4. The effects of diurnal and latitudinal variation of insolation and eclipses on the atmosphere are also studied. Seasonal effects are shown to dominate. It is shown that the atmospheric bulk may not be a minimum near aphelion but rather at intermediate distances from the sun during summer/winter where inadequate ice deposits may allow the atmosphere to collapse by freezing out over winter latitudes. The likely global circulation regimes for each model atmosphere are investigated as a function of temperature, and it is concluded that if CH4, O2, or CO dominates the atmosphere, Pluto will exhibit cyclic variations between an axially symmetric circulation system at perihelion and a baroclinic wave regime at aphelion. If N2 dominates the wave regime should hold continuously.
Alan Stern S.
Trafton Larry
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