High Resolution EUV/FUV Spectral Survey of the Dayglow From ARGOS/HITS

Details High Resolution EUV/FUV Spectral Survey of the Dayglow From ARGOS/HITS High Resolution EUV/FUV Spectral Survey of the Dayglow From ARGOS/HITS

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsa41a..09f&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SA41A-09

Physics

0310 Airglow And Aurora, 0355 Thermosphere: Composition And Chemistry, 0360 Transmission And Scattering Of Radiation, 0394 Instruments And Techniques

Scientific paper

The High Resolution Airglow and Aurora Spectroscopy (HIRAAS) experiment was successfully launched on the USAF Advanced Research and Global Observation Satellite (ARGOS) and continuously monitored the thermospheric and ionospheric airglow from May 1999 through March 2002 using three ultraviolet spectrographs. The High-resolution Ionospheric and Thermospheric Spectrograph (HITS) is a far- and extreme-ultraviolet (FUV/EUV) Rowland circle spectrograph covering the 50-150 nm spectral range at ~0.1 nm resolution in 11-nm passbands. While limb scanning, the HITS measures airglow emissions from 50 to 400 km every 130 seconds. During the mission the HITS stepped through a regular monthly sequence of passbands covering much of its spectral range. The HITS observations represents a uniquely useful dataset: high resolution, altitude-resolved global dayglow spectra. These measurements provide the capability to study new remote sensing techniques using resolved multiplet emissions (OII 83.4 nm), observed Doppler-shifted emissions from proton aurora (HI 121.6nm), and measure temperatures from molecular bandshapes (N2 Lyman-Birge-Hopfield). Moreover, the HITS spectra provide the means to disentangle complicated emission features seen at low resolution, such as NII 108.5nm emission which includes a number of nearby weak contaminating features. This analysis examines the altitude-resolved high resolution dayglow spectra acquired during June, 2000.

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