Theoretical study of the effect of ionospheric return currents on the electron temperature

Details Theoretical study of the effect of ionospheric return currents on the electron temperature Theoretical study of the effect of ionospheric return currents on the electron temperature

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.6013s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, June 1, 1987, p. 6013-6022.

Physics

11

Atmospheric Models, Electron Energy, Energy Transfer, Ionospheric Currents, Auroral Zones, Field Aligned Currents, Heat Flux, Polar Regions, Temperature Profiles, Thermoelectricity, Three Dimensional Models, Vertical Motion

Scientific paper

A time-dependent, three-dimensional model of the high-altitude ionosphere is presently used to study the effects of field-aligned ionospheric return currents on auroral electron temperatures for different seasonal and solar cycle conditions, as well as for different upper boundary heat fluxes. The average, large scale, return current densities, which are a few microamps/sq m, are too small to affect auroral electron temperatures. The thermoelectric effect exhibits a pronounced solar cycle and seasonal dependence, and its heat transport corresponds to an upward flow of electron energy which can be either a source or sink of electron energy depending on altitude and geophysical conditions.

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