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GEOPHYSICAL RESEARCH LETTERS,
VOL. 29,
1461,
4 PP., 2002
doi:10.1029/2001GL013956
Ionospheric and dayglow responses to the radiative phase of the Bastille Day flare
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
Harvard-Smithsonian Center for Astrophysics, Cambridge MA, USA
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
Plasma Physics Division, Naval Research Laboratory, Washington, DC, USA
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
Plasma Physics Division, Naval Research Laboratory, Washington, DC, USA
University of Southern California, Los Angeles, CA, USA
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, DC, USA
The Sun's Bastille Day flare on July 14, 2000 produced a variety of geoeffective events. This solar eruption consisted of an X-class flare followed by a coronal mass ejection that produced a major geomagnetic storm. We have undertaken a study of this event beginning with an analysis of the effects of the radiative phase of the flare on the dayglow and the ionosphere. The key new enabling work is a novel method of evaluating the X-ray and extreme ultraviolet (EUV) solar spectral irradiance changes associated with the flare. We find that the solar radiative output enhancements modeled during the flare are consistent with measurements of both solar EUV irradiance and far UV Earth thermospheric dayglow. We use the SAMI2 model to predict global ionospheric changes along a magnetic meridian that show significantly different northern and southern effects, suggesting that flares can be used to study ionospheric dynamics.
Published 28 May 2002.
Citation: (2002), Ionospheric and dayglow responses to the radiative phase of the Bastille Day flare, Geophys. Res. Lett., 29(10), 1461, doi:10.1029/2001GL013956.
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