Ionospheric precursors to scintillation activity

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Paul S.J. Spencer


Ionospheric scintillation is the rapid fluctuation of both phase and amplitude of trans-ionospheric radio waves due to small scale electron density irregularities in the ionosphere. Prediction of the occurrence of scintillation at L band frequencies is needed to mitigate the disruption of space-based communication and navigation systems. The purpose of this paper is to present a method of using tomographic inversions of the ionospheric electron density obtained from ground-based GPS data to infer the location and strength of the post-sunset plasma drift vortex. This vortex is related to the pre-reversal enhancement in the eastwards electric field which has been correlated to the subsequent occurrence of scintillation.

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How to Cite
Spencer, P. S. (2014) “Ionospheric precursors to scintillation activity”, Annals of Geophysics, 57(1), p. A0185. doi: 10.4401/ag-6389.
Physics of the Atmosphere