Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34782
Title: Evolution of line charge density of steadily-developing upward positive leaders in triggered lightning
Authors: Chen, M 
Zheng, D
Du, Y 
Zhang, Y
Issue Date: 2013
Publisher: AGU Publications
Source: Journal of geophysical research : atmospheres, 2013, v. 118, no. 10, p. 4670-4678 How to cite?
Journal: Journal of geophysical research : atmospheres
Abstract: We present an approach for retrieving the temporal and spatial evolution of the charge density and the current of a steadily-developing upward leader based on ground observations of electrical fields and high speed camera images of two upward positive leaders initiated by a classical rocket-triggered lightning before the wire disintegration. For a period of a few milliseconds, for the upward leader segments developing above altitude about 200 m, we obtained the leader speed, calculated the leader charge density and the leader current. For the two leaders, both the leader speed and the charge density, hence the leader current, showed a trend of increase as the leader propagated upward. There was a good consistency in the variation trend between the calculated leader current and the leader channel brightness. The leader current calculated agreed well with the current measured at the channel base, indicating that our proposed model for retrieving the leader charge density is effective and reliable.
URI: http://hdl.handle.net/10397/34782
ISSN: 2169-897X
DOI: 10.1002/jgrd.50446
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

2
Citations as of Feb 26, 2017

WEB OF SCIENCETM
Citations

2
Last Week
0
Last month
Citations as of Jun 23, 2017

Page view(s)

23
Last Week
3
Last month
Checked on Jun 18, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.