HR: 1400h
AN: SA33A-03    [Abstracts]
TI: Impact of Flare Radiation on the Ionosphere
AU: Slinker, S
EM: slinker@ppd.nrl.navy.mil
AF: Naval Research Laboratory, Plasma Physics Division, Washington, DC 20375, United States
AU: Krall, J
EM: krall@ppd.nrl.navy.mil
AF: Naval Research Laboratory, Plasma Physics Division, Washington, DC 20375, United States
AU: * Huba, J D
EM: huba@ppd.nrl.navy.mil
AF: Naval Research Laboratory, Plasma Physics Division, Washington, DC 20375, United States
AU: Warren, H
EM: harry.warren@nrl.navy.mil
AF: Naval Research Laboratory, Space Science Division, Washington, DC 20375, United States
AU: Joyce, G
EM: joyce@ppd.nrl.navy.mil
AF: Icarus Research, Inc., Exfair Rd, Bethesda, MD 20814, United States
AB: 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.
DE: 2427 Ionosphere/atmosphere interactions (0335)
DE: 2435 Ionospheric disturbances
DE: 2437 Ionospheric dynamics
DE: 2736 Magnetosphere/ionosphere interactions (2431)
DE: 3369 Thermospheric dynamics (0358)
SC: SPA-Aeronomy [SA]
MN: 2007 Joint Assembly