On conformity of the EEJ based ionospheric model to the fountain effect and resulting improvements

Details On conformity of the EEJ based ionospheric model to the fountain effect and resulting improvements On conformity of the EEJ based ionospheric model to the fountain effect and resulting improvements

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jastp..73..779a&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 73, Issue 7-8, p. 779-784.

Physics

1

Scientific paper

The total electron content (TEC) of the equatorial ionosphere is controlled by photochemical processes as well as the transport of the ionospheric plasma near the magnetic equator. The transport phenomenon is initiated by the vertical drift driven by the eastward electric field, which also drives the Equatorial Electrojet. The empirical relation between the Equatorial Electrojet and the anomaly component of the equatorial TEC has already been established. Taking this relation as a reference, a simplified physical model of the anomaly component of equatorial TEC is obtained as a function of Equatorial Electrojet. Influence of other factors like the solar incidence angle and the solar flux are also considered here and the extent of their influence are also investigated. This has been done using TEC data obtained from dual frequency GPS receivers during the low solar activity period of 2005. The derived model is based on the physics of the underlying fountain effect and matches with the observed empirical relation to a fair extent. Obtained results are found to corroborate with previous findings and these physical model values are found to have improved correlation with the observed data than the reference empirical relation. This establishes the conformity between the EEJ based ionospheric model and the physical phenomenon of the fountain effect.

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