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(Article of periodic en Anglais - 2014)

Document title

Cloud-to-ground lightning signatures of long-lived tornadic supercells on 27-28 April 2011

Authors(s) and Affiliation(s)

STRADER S.M. (1) ; ASHLEY W.S. (1) ;
(1) Dept. of Geography, Northern Illinois Univ., DeKalb, ETATS-UNIS

Abstract

This study integrates past research methodologies, data from the National Lightning Detection Network (NLDN), and geographic information system techniques to assess the lightning and severe weather hazard relationship for the 27–28 April 2011 United States tornado outbreak. NLDN and Doppler radar data are used to examine the cloud-to-ground (CG) lightning characteristics associated with 7 supercell thunderstorms that produced long-track, significant and/or violent tornadoes. Analyses indicate that CG lightning flashes alone do not provide enough information for the detection of a lightning jump prior to tornadogenesis. All 7 supercells were dominated by negative-polarity CG lightning flashes; which is expected due to the geographic location and elevated low-level moisture found in the outbreak environment. The correlation between low-level mesocyclone strength and total CG lightning flash rate was varied and inconsistent among all storms despite their formation and sustenance in similar environmental and geographic space

Source

Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2014, vol. 35, no4 [pp. 273-296]

Bibliographic references : 3 p.

Collation : 6 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1080/02723646.2014.918527

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28681567 : Permanent link - XML version
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