Investigations of Ultraviolet Emissions from the Ionosphere
Final rept. 16 Jan 1990-15 Jan 1993
NORTHWEST RESEARCH ASSOCIATES INC BELLEVUE WA
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The Work of Contract F19268-C-0050 has improved the accessibility and utilization of containing ultraviolet UV measurements of the ionosphere obtained from satellite and Space Shuttle experiments. These experiments were the Ultraviolet Backgrounds on the S3-4 satellite, the Auroral Ionospheric Remote Sensor AIRS on the PolarBEAR satellite, the Horizon Ultraviolet Program HUP, and shuttles STS-4 and STS-39. These databases were used to analyze the ionosphere and to validate the Atmospheric Ultraviolet Radiation Integrated Code AURIC. The S3-4 experiment measured the UV emissions from the ionosphere looking in nadir while in a polar orbit. Data were collected simultaneously from three instruments. The telemetry tapes, processed into VAX compatible tapes, are stored at the Phillips LaboratoryGeophysics Directorate, where they re active in ionospheric analysis. The AIRS data contain a series of ionospheric images recorded mainly at high latitudes and at selected wavelength. These have been placed on a set of optical disks and are accompanied with software which allows quick looks at the images or the acquiring of a raw image for further processing. The HUP instrument collected horizon profiles from Space Shuttle at selected UV wavelengths. These absolute intensity measurements contribute to the understanding of ionospheric processes and are useful where backgrounds are a consideration. This database has also been placed on an optical disk. These data were also used as comparison checks between AURIC and actual recorded measurements. The initial results were favorable. Ionospheric emissions, Ultraviolet aurora, Atmospheric radiance models.
- Atmospheric Physics