Pioneer Venus Orbiter search for Venusian lightning

Details Pioneer Venus Orbiter search for Venusian lightning Pioneer Venus Orbiter search for Venusian lightning

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9611033b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, July 1, 1991, p. 11,033-11,043.

Physics

Optics

20

Lightning, Venus Atmosphere, Atmospheric Electricity, Pioneer Venus 2 Night Probe

Scientific paper

The results are reported of a search during 1988 and 1990 for optical pulses from lightning on the Venus nightside using the star sensor aboard the Pioneer Venus Orbiter. No optical evidence for lightning activity is found. These searches covered a much larger latitude range than any previous search. The results show that the Beta and Phoebe Regio areas previously identified by Russell et al. (1988) as areas with high rates of lightning activity were not active during the two seasons of the present observations. The results imply that the global flash rate and energy dissipation rate derived by Krasnopol'sky (1983) from observations of a single storm are too high. Experimental measurements performed to determine the amount of scattering occurring in the star scanner optics indicate that a previously determined upper bound to lightning activity is too low.

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