Physics – Space Physics
Scientific paper
May 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983rvgsp..21..892w&link_type=abstract
Reviews of Geophysics and Space Physics (ISSN 0034-6853), vol. 21, May 1983, p. 892-902.
Physics
Space Physics
30
Atmospheric Electricity, Earth Atmosphere, Jupiter Atmosphere, Lightning, Venus Atmosphere, Clouds (Meteorology), Pioneer Venus Spacecraft, Precipitation (Meteorology), Thunderstorms, Venera Satellites, Voyager 1 Spacecraft, Whistlers, Planets, Venus, Earth, Jupiter, Lightning, Electrical Effects, Water, Clouds, Comaparisons, Whistlers, Voyager 1, Discharges, Radio Emissions, Optical Properties, Energy, Pioneer Venus, Orbiters, Pvo, Atmosphere, Electromagnetic Properties
Scientific paper
The principal characteristics of lightning on earth are reviewed, and the evidence for lightning on Venus and Jupiter is examined. The mechanisms believed to be important to the electrification of terrestrial clouds are reviewed, with attention given to the applicability of some of these mechanisms to the atmospheres of Venus and Jupiter. The consequences of the existence of lightning on Venus and Jupiter for their atmospheres and for theories of cloud electrification on earth are also considered. Since spacecraft observations do not conclusively show that lightning does occur on Venus, it is suggested that alternative explanations for the experimental results be explored. Since Jupiter has no true surface, the Jovian lightning flashes are cloud dischargaes. Observations suggest that Jovian lightning emits, on average, 10 to the 10 J of optical energy per flash, whereas on earth lightning radiates only about 10 to the 6th J per flash. Estimates of the average planetary lightning rate on Jupiter range from 0.003 per sq km per yr to 40 per sq km per yr.
Hunten Don M.
Krider Philip E.
Williams Mary-Anne
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