A theoretical study of the global F region for June solstice, solar maximum, and low magnetic activity

Details A theoretical study of the global F region for June solstice, solar maximum, and low magnetic activity A theoretical study of the global F region for June solstice, solar maximum, and low magnetic activity

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.5285s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, June 1, 1985, p. 5285-5298.

Physics

57

Atmospheric Models, F Region, Auroras, Electric Potential, Equatorial Atmosphere, Ionospheric Ion Density, Midlatitude Atmosphere, Polar Regions, Solar Terrestrial Interactions, Three Dimensional Models

Scientific paper

A time-dependent, three-dimensional, multi-ion model of the ionospheric F region at 120-800 km altitude is presented. Account is taken of field-aligned diffusion, cross-field electrodynamic drifts in equatorial and high latitude regions, interhemispheric flow, thermospheric winds, polar wind escape, energy-dependent chemical reactions and neutral composition changes. Attention is also given to the effects of ion production by solar EUV radiation and auroral precipitation, thermal conduction, diffusion-thermal heat flow, local heating and cooling processes, offsets between the geomagnetic and geographic poles, and bending of field lines near the magnetic equator. The model incorporates all phenomena described by previous models and can be applied to tracing magnetic storm and substorm disturbances from high to low latitudes on a global scale. Sample results are provided for ionospheric features during a June solstice, the solar maximum and in a period of low geomagnetic activity. The model will eventually be used to study coupled ionosphere-thermosphere activity.

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