Sprite beads originating from inhomogeneities in the mesospheric electron density

Details Sprite beads originating from inhomogeneities in the mesospheric electron density Sprite beads originating from inhomogeneities in the mesospheric electron density

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3804808l&link_type=abstract

Geophysical Research Letters, Volume 38, Issue 4, CiteID L04808

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Atmospheric Processes: Atmospheric Electricity, Atmospheric Processes: Mesospheric Dynamics, Atmospheric Processes: Lightning, Atmospheric Composition And Structure: Middle Atmosphere: Composition And Chemistry, Computational Geophysics: Modeling (1952, 4255, 4316)

Scientific paper

Small, persistent luminous spots observed in sprites may be originated by underlying inhomogeneities in the density of free electrons. Using a streamer density model, we show that the collision of a streamer with a localized enhancement of ionization leaves a region of reduced conductivity and enhanced field in the streamer channel. We discuss the light emissions from this region and predict its spectrum. These emissions are identified with “sprite beads” and we propose that they may serve to investigate the spatial distribution of free electrons in the upper atmosphere above a thunderstorm.

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