Seasonal variations of the high-latitude F region for strong convection

Details Seasonal variations of the high-latitude F region for strong convection Seasonal variations of the high-latitude F region for strong convection

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87..187s&link_type=abstract

Journal of Geophysical Research, vol. 87, Jan. 1, 1982, p. 187-198.

Physics

37

Annual Variations, Convective Flow, F Region, Ionospheric Composition, Ionospheric Electron Density, Ionospheric Ion Density, Atmospheric Models, Continuity Equation, Electron Density Profiles, Geomagnetism, Kinetic Energy, Magnetic Effects, Plasma Dynamics

Scientific paper

A plasma convection model is combined with an ionospheric-atmospheric composition model in order to study the seasonal variations of the high-latitude F region for geomagnetic conditions leading to strong convection. In a model calculation, a field tube of plasma is followed as it moves along a convection trajectory through a moving neutral atmosphere. Altitude profiles of the ion densities are obtained by solving the appropriate continuity, momentum, and energy equations including numerous high-latitude processes. It is found that the high-latitude ionosphere exhibits a significant UT variation both during the winter and summer. In general, the electron density at high-latitudes is lower in winter than in summer. In both summer and winter, the major region of low electron density is associated with the 'main' or mid-latitude' trough.

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