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The relationship between variations of the atmospheric electric field in the southern polar region and thunderstorm activity

Troshichev, O.A.; Frank-Kamenetsky, A.; Burns, G.; Fuellekrug, M.; Rodger, A.; Morozov, V.. 2004 The relationship between variations of the atmospheric electric field in the southern polar region and thunderstorm activity. Advances in Space Research, 34 (8). 1801-1805. 10.1016/j.asr.2003.07.063

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Abstract/Summary

Observations of the atmospheric, near-surface vertical electric field component E-z have been carried out at the Russian-Antarctic station, Vostok, since 1998 under the framework of a cooperative Russian-Australian project. Only data satisfying "fair weather" conditions are selected for the subsequent analyses. Behavior of E-z field at Vostok station is compared with thunderstorm occurrence determined from a network of ELF magnetic field measurements in April 1998 and with simultaneous VLF emission measurements at Halley Bay (Antarctica). We find no correlation between the 5 min averages of E-z and the lightning flashes intensity or between E-z and VLF emissions, although significant correlation between E-z and VLF emissions is observed in particular cases. The same statistical results have been obtained from a comparison of hourly averaged values. Moreover, even the mean diurnal variation of electric field derived for 10 fine weather days in April 1998 turned out to be inconsistent with the mean diurnal variation of the lightning flashes for the same days. Reasons of these inconsistencies are discussed.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.asr.2003.07.063
Programmes: BAS Programmes > Antarctic Science in the Global Context (2000-2005) > Magnetic Reconnection, Substorms and their Consequences
ISSN: 0273-1177
Additional Keywords: atmospheric electric field; southern polar region; thunderstorm activity
NORA Subject Terms: Meteorology and Climatology
Earth Sciences
Atmospheric Sciences
Date made live: 15 Mar 2012 11:46
URI: http://nora.nerc.ac.uk/id/eprint/12484

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