Lightning characteristics of extreme weather events

Nikolai Dotzek, Colin Price

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Lightning characteristics of extreme weather events are reviewed by first introducing the variety of thunderstorm types and large scale weather systems with embedded thunderstorms which may cause extreme events. In a description of charge separation processes, we identify the non-inductive charging mechanism as the most relevant one and outline the resulting basic charge layer distribution, the normal (or inverted) polarity dipoles and tripoles. Several case studies serve to illustrate and exemplify the concepts of the introductory part and relate the lightning evolution characteristics to hail storms, tornadoes, mesoscale convective systems, derechos or tropical and extratropical cyclones. There is compelling evidence that severe weather from thundering convection is often correlated to anomalous lightning activity, for instance signified by unusual values of lightning frequency or polarity. We also identify areas in which further research is needed, like the causes of the land-ocean contrast in lightning activity or the interrelation between recently discovered cold-ring cloud top structures and the storms' total lightning evolution (cloud-to-ground and intracloud flashes). Due to recently improved total lightning discrimination capabilities of lightning detection networks, we are confident that significant progress can be achieved in clarifying these open issues in the near future.

Original languageEnglish
Title of host publicationLightning
Subtitle of host publicationPrinciples, Instruments and Applications: Review of Modern Lightning Research
PublisherSpringer Netherlands
Pages487-507
Number of pages21
ISBN (Print)9781402090783
DOIs
StatePublished - 2009

Keywords

  • Derechos
  • Electrification
  • Flash floods
  • Hail
  • Lightning
  • Mesoscale convective systems
  • Severe convective storms
  • Straight-line winds
  • Tornadoes
  • Tropical and extratropical cyclones

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