Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa41a1841a&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SA41A-1841
Physics
[2481] Ionosphere / Topside Ionosphere
Scientific paper
Radiance from atomic oxygen emission at 135.6 nm can be used to infer electron densities in the ionosphere, as it is produced by recombination of oxygen ions. These measurements are currently used with global ionospheric assimilation models, such as the Global Assimilation of Ionospheric Measurements (GAIM). In general, these measurements have only been useful at night, as photoelectron impact initiated by sunlight also provides a bright source of 135.6 nm radiance. In this study, we use ultraviolet radiance measurements from several UV imagers (the Special Sensor Ultraviolet Spectrographic Imager [SSUSI] instruments aboard 3 DMSP platforms and the Global Ultraviolet Imager [GUVI] aboard the Thermosphere Ionosphere Mesosphere Energetics and Dynamics [TIMED] spacecraft) and photoelectron transport models to establish limits on where dayglow-free oxygen ion recombination dayside data can be obtained, broadening the range of ionospheric measurements and assisting straightforward assimilation into global models.
Aiello John J.
DeMajistre Robert
Paxton Larry J.
Schaefer Robert K.
Toigo Anthony D.
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