Meteor Trails and Columniform Sprites

摘要: Abstract A theoretical model of columniform sprites (or c-sprites), a distinctive class high altitude, temporally brief optical emissions, is presented and compared to observations which extends earlier work (1998, E. M. D. Symbalisty, R. Roussel-Dupre, V. Yukhimuk, EOS Transactions the AGU 79, No. 45, p. F129) by making strong connection with meteors. The key features are: (1) an ambient conductivity profile that falls between measured nighttime daytime conductivity; (2) aerosol reduced in trail from meteor passed through some time during evening, (3) cloud-to-ground (hereafter CG) lightning stroke, sufficient charge transfer, subsequent occurring within hour development trail. predicts column light resulting conventional breakdown air electric field observed altitude range. For case positive CG stroke emissions are extinguished passage runaway electron beam. beam initiated same allows occur propagates cloud tops ionosphere. Based on our modeling results, negative for amount produces about twice as bright. extinguished, this case, taking into account increase due air. In both cases, parameters examined here, simulated c-sprite last less than 17 ms, or one CCD video field.