Global Observations of Daytime Ionospheric Electron Densities During the Radiative Phase of the Bastille Day Event

Details Global Observations of Daytime Ionospheric Electron Densities During the Radiative Phase of the Bastille Day Event Global Observations of Daytime Ionospheric Electron Densities During the Radiative Phase of the Bastille Day Event

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsa41a..14d&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #SA41A-14

Physics

2494 Instruments And Techniques, 0310 Airglow And Aurora, 0335 Ion Chemistry Of The Atmosphere (2419, 2427), 2419 Ion Chemistry And Composition (0335), 2435 Ionospheric Disturbances

Scientific paper

We present our observations of the global electron density and its variation during the radiative phase of the Bastille Day X-class flare that occurred on July 14, 2000. The X-class flare was followed by a coronal mass ejection that produced a major geomagnetic storm. Global electron densities were derived by inversion of limb scan data observed by the Low Resolution Airglow and Aurora Spectrograph (LORAAS) on the Advanced Research and Global Observation Satellite (ARGOS), which was launched into a sun-synchronous orbit on 23 February 1999 at 2:29:55 AM Pacific Standard Time. The LORAAS gathers limb scans over the 750-100 Km altitude range, covering the 800-1700 Å passband at 17 Å resolution. The LORAAS obtains a limb scan every 90 seconds. The peak of the flare occurred at approximately 10.6 UT, just after the ARGOS passed from the nightside onto the dayside. We compare the electron densities from the orbits just before and after the fare event and electron densities from orbits in the same longitude sector on the days before and after the flare.

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