Computer Science
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983p%26ss...31.1363k&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 31, Nov. 1983, p. 1363-1369.
Computer Science
24
Atmospheric Electricity, Lightning, Nitric Oxide, Venus Atmosphere, Atmospheric Chemistry, Nitrogen Atoms, Venera Satellites, Vertical Distribution
Scientific paper
The energy characteristics of Venusian lightning are estimated on the basis of Venera-9 and 10 optical observations, and the chemical effects of the lightning on nitrogen compounds in the Venusian atmosphere are considered. The estimates presented by Krasnopolskii (1980) are updated and revised, and averaged data on earth lightning are provided for comparison. Lightning parameters estimated include flash duration = 0.25 sec, strokes/flash = 10-20, visible energy/flash = 2 x 10 to the 7th J, visible energy/stroke length = 1.3 x 10 to the 6th J/m, total energy/flash = 8 x 10 to the 8th J, thunderstorm area = 50,000 sq km, planetary lightning rate = 45/sq km yr, and mean energy release by lightning = 1 erg/sq cm sec. From these data it is calculated that NO and N are produced by lightning at rates of 5 x 10 to the 8th and 7 x 10 to the 9th/sq cm sec, respectively, giving number densities at 135 km of 1.8 x 10 to the 6th and 3 x 10 to the 7th/cu cm. The budgets and distribution of N compounds and species are discussed.
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