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Analysis of charge transport during lightning using balloon-borne electric field sensors and Lightning
 

Summary: Analysis of charge transport during lightning using
balloon-borne electric field sensors and Lightning
Mapping Array
William W. Hager,1
Richard G. Sonnenfeld,2
Beyza Caliskan Aslan,1
Gaopeng Lu,2
William P. Winn,2
and William L. Boeck3
Received 26 October 2006; revised 15 March 2007; accepted 30 May 2007; published 25 September 2007.
[1] Recently, wide band measurements of the electric field near a lightning flash have
been obtained by a balloon-borne electric field sonde or Esonde. This paper develops
new techniques for analyzing lightning-associated charge transport in a thundercloud by
using both the Esonde data and simultaneous Lightning Mapping Array (LMA)
measurements of VHF pulses emitted during lightning breakdown processes. Innovations
in this paper include the following: (1) A filtering procedure is developed to separate
the background field associated with instrument rotation and cloud charging processes
from the lightning-induced electric field change. Because of the abrupt change in the
signal caused by lightning, standard filtering techniques do not apply. A new mathematical
procedure is developed to estimate the background electric field that would have existed if

  

Source: Aslan, Beyza Caliskan - Deptartment of Mathematics and Statistics, University of North Florida
Hager, William - Department of Mathematics, University of Florida

 

Collections: Mathematics