POLAR UVI image with DMSP,
May 19, 1996
A calibrated image from POLAR UVI has been seperated into dayglow and
auroral components. The auroral contribution was then interpreted in
terms of energy flux of the precipitating electrons. Shown is this
energy flux mapped to a geomagnetic (apex) coordinate system,
superimposed with in situ energy fluxes from electron spectra
obtained by the DMSP satellites above the aurora (altitude 800 km).
Data from a 60 second interval of the satellite track, bracketing the
image acquisition time is shown. Also indicated is the location of
the equatorward boundary of the aurora (red line), as derived from the DMSP
satellite data. The light blue lines show geographic
coordinates.