2D Low-Latitude Ionospheric Density Reconstructions from UV Airglow

Details 2D Low-Latitude Ionospheric Density Reconstructions from UV Airglow 2D Low-Latitude Ionospheric Density Reconstructions from UV Airglow

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsa32a0680m&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SA32A-0680

Mathematics

Logic

0310 Airglow And Aurora, 2415 Equatorial Ionosphere, 6982 Tomography And Imaging

Scientific paper

Launched aboard the Air Force Test Program's Advanced Research and Global Observation Satellite (ARGOS) in February 1999, the Low Resolution Airglow and Aurora Spectrograph (LORAAS) has collected numerous spectra of Earth's airglow in the extreme ultraviolet and far ultraviolet regimes (800 - 1700 Angstroms). Limb scans, atmospheric radiance profiles in the satellite's orbital plane, are collected every ninety seconds. The intensity of the nighttime O I 1356-Angstrom emissions associated with the equatorial anomaly were measured and interpreted using analysis techniques developed for the Defense Meteorological Satellite Program (DMSP) Special Sensor Ultraviolet Limb Imager (SSULI). A quasi-tomographic technique was used to invert the intensity scans to derive electron density profiles of the ionosphere in the anomaly region. We apply these analysis techniques to determine the separation and relative peak electron densities of the northern and southern anomaly crests for nighttime LORAAS data spanning the entire month of October 2000. More than 85% of the data collected during this month is used in the analysis. Our results are compared to first principles ionospheric models for both geomagnetically quiet and active times.

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