Modeled F region response to auroral dynamics based upon Dynamics Explorer auroral observations

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Auroral Zones, F Region, Ionospheric Electron Density, Satellite Observation, Atmospheric Models, Dynamics Explorer Satellites, Electron Precipitation, Energy Transfer, Image Processing

Scientific paper

Auroral images from the Dynamics Explorer 1 (DE 1) scanning auroral imager have been combined with in situ auroral precipitation data from the DE 2 low-altitude plasma instrument, to form a time-dependent global auroral energy flux model. This model has both good time (12 min) and spatial (100 km) resolution compared to that currently available for global-scale ionospheric and thermospheric modeling. The development and comparison of this model with others are discussed. Data from an aurorally active period, November 25, 1981, are presented and used as a case study for this model. Using a global ionospheric model, the effect of the DE auroral model is contrasted with that of a conventional empirical auroral energy flux model. Major differences in the modeled F region ionosphere are predicted from this comparative study.

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