Thermospheric Temperatures from SSULI UV Emission Scale Heights
Abstract
We present results of an analysis of exospheric temperatures derived by fitting a constant scale height model to the topside of emission profiles of N2 observed by the Special Sensor Ultraviolet Limb Imager (SSULI) aboard the Defense Meteorological Satellite Program F-18 satellite during 2010. To maximize the signal-to-noise ratio, we summed contributions from all the N2Lyman-Birge-Hopfield (LBH) bands between 1380 and 1600 Å. Furthermore, we added in the emission from the N II 1085 Å line, which is produced by photoionization excitation of N2 and thus is proportional to the N2 density in the topside. We compare the results of the inversion to the NRLMSIS00E model and find good agreement. We also compare satellite drag-derived densities from the CHAMP and GOCE satellites to densities derived by scaling the NRLMSIS00E densities at the satellite altitudes to the SSULI-derived exospheric temperatures and find excellent agreement between the data sets. We present the analysis approach, the results, and discuss the implications of the measurements in light of the comparisons to the drag-derived densities.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFMSA21A3156D
- Keywords:
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- 0355 Thermosphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 2427 Ionosphere/atmosphere interactions;
- IONOSPHEREDE: 7894 Instruments and techniques;
- SPACE PLASMA PHYSICSDE: 7959 Models;
- SPACE WEATHER