Two-day oscillation of the equatorial ionization anomaly

Details Two-day oscillation of the equatorial ionization anomaly Two-day oscillation of the equatorial ionization anomaly

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.6343c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A5, May 1, 1992, p. 6343-6357.

Physics

53

Anomalies, Atmospheric Ionization, Equatorial Atmosphere, Oscillations, Periodic Variations, Planetary Waves, Atmospheric Physics, Critical Frequencies, Electric Fields

Scientific paper

The day-to-day variability of the equatorial ionization anomaly (EIA), especially the 2-day oscillation of the EIA, has recently been studied in China. It is suggested that the main driving source of the 2-day oscillation (or the day-to-day variation) of the EIA is a planetary wave with a 2-day period (or the superposition of planetary waves with different periods). The planetary wave modulates the tidal wind, and this results in the 2-day oscillation of the EIA via the dynamo effect and fountain effect. This suggestion, derived from the observational data, has been confirmed by numerical simulations.

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