HR: 1340h
AN: AE23A-0897    [Abstracts]
TI: An enhancement of the ionospheric sporadic E layer in response to negative polarity cloud-to- ground lightning
AU: * Davis, C J
EM: C.J.Davis@rl.ac.uk
AF: Rutherford Appleton Laboratory, Space Science & Technology Department, Rutherford Appleton Laboratory, Chilton, OX OX110QX, United Kingdom
AU: Lo, K
EM: kinhinglo@gmail.com
AF: Rutherford Appleton Laboratory, Space Science & Technology Department, Rutherford Appleton Laboratory, Chilton, OX OX110QX, United Kingdom
AB: Lightning data from 2005 to 2007, collected using a Boltek Storm Tracker system installed at Chilton, UK, was used to investigate the mean response of the ionospheric sporadic-E layer to lightning strokes in a superposed epoch study. Unlike similar previous studies, the lightning detector used in the current study is capable of discriminating between positive and negative lightning strokes and between cloud-to-ground and inter-cloud lightning strokes. Superposed epoch studies carried out separately using these subsets of lightning strokes as trigger events revealed that the dominant cause of the observed ionospheric enhancement in the Es layer results from negative cloud-to-ground lightning events.
DE: 2427 Ionosphere/atmosphere interactions (0335)
DE: 2443 Midlatitude ionosphere
DE: 3304 Atmospheric electricity
DE: 3324 Lightning
DE: 3394 Instruments and techniques
SC: Atmospheric and Space Electricity [AE]
MN: 2007 Fall Meeting