An improved 3-D self-consistent stochastic stepped leader model

Yazhong Xu, Mingli Chen

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)


This paper presents an improved 3-D self-consistent stochastic model for downward stepped leader in negative cloud-to-ground lightning. The characteristics of a stepped leader, such as bending, step length, step pause interval and leader speed, are described by a series of equations and criteria, leading to a stochastic and step-wise growth of 3 dimensional leader channels. Lightning parameters, such as the evolution of leader charge distribution, corona sheath radius, core tip potential, ground electric field strength, total charge induced in the leader channel and striking distance to flat ground are computed and evaluated. The parameters predicted by the present model are found in relatively good agreement with those in literature. Furthermore, this model may serve as a virtual lab to study the attachment process of lightning striking to various structures for engineering building lightning protection analysis.
Original languageEnglish
Title of host publication2011 7th Asia-Pacific International Conference on Lightning, APL2011
Number of pages7
Publication statusPublished - 1 Dec 2011
Event2011 7th Asia-Pacific International Conference on Lightning, APL2011 - Chengdu, China
Duration: 1 Nov 20114 Nov 2011


Conference2011 7th Asia-Pacific International Conference on Lightning, APL2011

ASJC Scopus subject areas

  • Environmental Chemistry

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