Auroral photometry from the atmosphere Explorer satellite

Computer Science – Sound

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Arctic Regions, Auroral Spectroscopy, Photometry, Satellite Sounding, Atmospheric Models, Electron Energy, Explorer 51 Satellite, Nitrogen, Radar Measurement, Time Response

Scientific paper

Attention is given to the ability of remote sensing from space to yield quantitative auroral and ionospheric parametrers, in view of the auroral measurements made during two passes of the Explorer C satellite over the Poker Flat Optical Observatory and the Chatanika Radar Facility. The emission rate of the N2(+) 4278 A band computed from intensity measurements of energetic auroral electrons has tracked the same spetral feature that was measured remotely from the satellite over two decades of intensity, providing a stringent test for the measurement of atmospheric scattering effects. It also verifies the absolute intensity with respect to ground-based photometric measurements. In situ satellite measurments of ion densities and ground based electron density profile radar measurements provide a consistent picture of the ionospheric response to auroral input, while also predicting the observed optical emission rate.

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