Effects of composition and fountain effect on the annual variation of the day-time F-layer at low latitudes
作者： M.J Buonsanto
DOI: 10.1016/0021-9169(84)90027-8
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摘要: Abstract The annual variation of the daytime F 2-layer peak electron density ( NmF2 ) is studied at two low latitude stations, Okinawa and Tahiti (geomagnetic latitudes ± 15°) for sunspot maximum years 1979–1981. Observed values are compared with those calculated using MSIS model a simplified version continuity equation day-time equilibrium conditions. Summer-winter differences imply an intensification fountain effect on winter side equator expense summer side. This could be explained by to neutral wind. Semi-annual variations, however, appear mainly due changes in composition.
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