Computer Science
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984rspta.313..107h&link_type=abstract
(Royal Society, Discussion on Rotation in the Solar System, London, England, Mar. 8, 9, 1984) Royal Society (London), Philosophi
Computer Science
37
Atmospheric Circulation, Earth Rotation, Planetary Atmospheres, Angular Momentum, Jupiter Atmosphere, Polar Wandering (Geology), Saturn Atmosphere, Venus Atmosphere
Scientific paper
The superrotation of the atmospheres of the earth, Venus, Jupiter, and Saturn relative to the respective solid planets is characterized in a review of recent observational and theoretical investigations. The fluctuations of the axial component of the atmospheric angular momentum on earth are shown to be well correlated with the fluctuations (up to about 1 msec) of the length of the day on time scales of 7 wk or 1 yr, such that the sum of the axial components of atmosphere, crust, and mantle is conserved over short time scales without the need for core-mantle coupling. A significant contribution of the equatorial-component fluctuations (on time scales of several days) to the wobble of the rotation pole is also observed. Similar effects are predicted for Venus, where the superrotation velocity is about ten times the rotation velocity of the solid planet, while the equatorial jet-stream velocities seen on Jupiter and Saturn (100 and 400 m/s, respectively, as compared to 30 m/s on earth) require further investigation.
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