Validation of O+ Profiles Inverted from LITES EUV Spectral Images
Abstract
OII 617 Å and OII 834 Å are features in the Earth's airglow spectrum which share the same production mechanism. Observed limb profiles of these two differ because 834 Å photons are resonantly scattered by ground state O+ ions while 617 Å photons are optically thin in the ionosphere. By comparing observations of the optically thick and optically thin emissions with radiative transport model predictions, we can obtain an O+ profile which is consistent with the observation. The Limb-Imaging Extreme Ultraviolet Spectrograph (LITES) has observes both of these features from 150 km to 350 km simultaneously and with high sensitivity. We compare an O+ density profile obtained by inverting EUV limb profiles from LITES to an electron density profile from the Millstone Hill incoherent scatter radar on June 9, 2017.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2017
- Bibcode:
- 2017AGUFMSA21A2501G
- Keywords:
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- 0355 Thermosphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 2437 Ionospheric dynamics;
- IONOSPHERE;
- 2494 Instruments and techniques;
- IONOSPHERE;
- 2794 Instruments and techniques;
- MAGNETOSPHERIC PHYSICS