Impact of Flare Radiation on the Ionosphere
Abstract
We study the impact of the solar flare radiation on the low- to mid-latitude ionosphere for a number of flares: 28 Oct 2003, 29 Oct 2003, 4 Nov 2004, and 7 Sept 2005. We use the solar EUV spectrum from the Flare Irradiance Spectral Model (FISM)1; the spectrum considers 10Å bins from 10 -- 1050 Å and a one minute cadence. We use this spectrum in the NRL three-dimensional ionosphere model SAMI3 to obtain the global impact of the flare on the mid- to low-latitude ionosphere. We find that the TEC can increase by ~ 10% which can be as high as ~ 25 TECU. Finally, we compare our results to GPS data and discuss improvements to the model. 1 Chamberlin, P.C., T.N. Woods, and F.G. Eparvier, ILWS Workshop Proc., GOA, 2006. Research supported by ONR.
- Publication:
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AGU Spring Meeting Abstracts
- Pub Date:
- May 2007
- Bibcode:
- 2007AGUSMSA33A..03S
- Keywords:
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- 2427 Ionosphere/atmosphere interactions (0335);
- 2435 Ionospheric disturbances;
- 2437 Ionospheric dynamics;
- 2736 Magnetosphere/ionosphere interactions (2431);
- 3369 Thermospheric dynamics (0358)