Ion frictional heating at high latitudes and its possible use for an in situ determination of neutral thermospheric winds and temperatures

Details Ion frictional heating at high latitudes and its possible use for an in situ determination of neutral thermospheric winds and temperatures Ion frictional heating at high latitudes and its possible use for an in situ determination of neutral thermospheric winds and temperatures

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.7580s&link_type=abstract

Journal of Geophysical Research, vol. 87, Sept. 1, 1982, p. 7580-7602.

Physics

74

Atmospheric Heating, Atmospheric Temperature, Ion Temperature, Ionospheric Drift, Thermosphere, Wind Profiles, Atmospheric Heat Budget, Direct Current, Electric Field Strength, Explorer Satellites, F Region, Ionospheric Currents, Ionospheric Ion Density, Kinetic Friction, Kinetic Heating, Neutral Gases, Polar Meteorology

Scientific paper

The Atmosphere Explorer C data base of ion temperature and ion drift velocities has been used to study the long recognized principle that large scale convection electric fields are responsible for substantial enhancements in the ion temperature at high latitudes. As had been indicated by various authors previously, the present study shows that there is a clear relationship between large ion velocities and ion temperature enhancements. Furthermore, with the help of a more quantitative study, it is found that, since ion heating is sensitive to the relative motion between the ion and neutral gases, the ion temperature and drift measurements can be used to extract neutral wind and neutral temperature information along the satellite track. From a study of several examples, it is concluded that the present approach can be used with varying degrees of accuracy for the diagnostic of thermospheric dynamical properties above 300 km when those properties are not measured directly. When neutral dynamical properties are measured, the approach could be used for a detailed study of the ion energy balance at high latitudes.

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