Parameter Tree:
EARTH SCIENCE > ATMOSPHERE > WEATHER EVENTS > LIGHTNING

Definition:
Lightning is a transient, high-current electric discharge with pathlengths measured in kilometers.

Reference:
Glossary of Meteorology, American Meteorological Society, 2015. Chalmers, J. A. 1957. Atmospheric Electricity. 235?255. Schonland, B. F. J. 1950. The Flight of Thunderbolts. 152 pp. Hagenguth, J. H. 1951. Compendium of Meteorology. 136?143.