Initiation of Lightning and the Growth of Electric Fields in Thunderstorms.

摘要

Further research into the glaciation of convective clouds of-the type that produce lightning has revealed that the early stages of ice formation can be detected by measurement of the supercooled droplet radius - a result which also has climatological implications. Further laboratory experiments have shown that the most effective methods of lightning initiation are likely to involve supercooled raindrops, with threshold fields around 300kV/m. A new model of thundercloud electrification and lightning production has been developed, from which it is possible to deduce the sensitivity of lightning frequency to meteorological and cloud microphysical parameters. Lightning, Ice, Corona, Electric field.