Temporal and Spatial Structure of Short Wavelength Infrared Auroral Backgrounds

Infrared auroral backgrounds in the 3 micron region were measured with a filtered radiometer from a KC-135 aircraft. The measurements of temporal and spatial variations in the infrared were compared with simultaneous measurements of 3914A and 5577A visible radiation. Auroral measurements were obtain...

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Bibliographische Detailangaben
Hauptverfasser:	Huppi,E Ray, Villanucci,Dennis, Bruce,Marshall
Format:	Report
Sprache:	eng
Schlagworte:	Aerial platforms All sky cameras Atmospheric Physics AURORAE BACKGROUND RADIATION CHEMILUMINESCENCE COMPARISON DATA ACQUISITION DIURNAL VARIATIONS FOURIER TRANSFORMATION INFRARED SPECTRA KC-135 aircraft LOW LIGHT LEVELS Nitric oxide NITROGEN OXIDES PE62101F PHOTOMETERS RADIOMETRY SPATIAL DISTRIBUTION TANKER AIRCRAFT TELEVISION SYSTEMS WUAFGL76701008
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Zusammenfassung:	Infrared auroral backgrounds in the 3 micron region were measured with a filtered radiometer from a KC-135 aircraft. The measurements of temporal and spatial variations in the infrared were compared with simultaneous measurements of 3914A and 5577A visible radiation. Auroral measurements were obtained during dark and sunlit conditions. Frequency analysis shows the 3 micron and 5577A to be delayed and filtered relative to the prompt 3914A N2(+) emission. The ratio of 3 micron to 3914A emission varies by about a factor of 3 and appears to be a function of peak electron deposition altitude. (Author)